Malicious PDF — malware analysis report

Static analysis result for SHA-256 53bfb4437027f62c…

MALICIOUS

PDF

60.8 KB Created: 2020-10-27 04:26:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d2c7edc8e9f25e5298cb9555c8a0d652 SHA-1: 9636020afff4dd809a9b945262589f5bd0dfb652 SHA-256: 53bfb4437027f62cf70e4280eb883d1a485ed184ec1892294805987364cccb13
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple embedded links pointing to redirector infrastructure, specifically 'ttraff.cc', which is flagged as malicious. The document body, though heavily obfuscated, contains text related to 'ticket dealers' and the malicious URLs, suggesting a lure for phishing or malware. The presence of numerous PDF links to external sites, many hosted on Weebly, indicates a link farm designed to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/123?keyword=best+ticket+dealers In PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/vovadigofovexuneze.pdfIn PDF document text
    • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/nuzaxi-tovotawiti-xusimu-baxevuvomig.pdfIn PDF document text
    • https://somanenor.weebly.com/uploads/1/3/4/4/134472611/31edcc532bac0f.pdfIn PDF document text
    • https://mipolapepel.weebly.com/uploads/1/3/4/3/134395859/xupanixukibi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383806/normal_5f8cea437fd53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387590/normal_5f8e07b3928cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403951/normal_5f919f7dc62c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368246/normal_5f924fa6958d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f8ad42a1a1a3.pdfIn PDF document text
    • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/1000608.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/powuwenalapufaxusun.pdfIn PDF document text
    • https://zodebosamu.weebly.com/uploads/1/3/4/4/134444592/292234.pdfIn PDF document text
    • https://josugonu.weebly.com/uploads/1/3/4/4/134488469/zozazazomag_besisonu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/569b6927-62f2-48bf-be07-04abfce8fc55/vupenaxilobumufifeje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0321d871-0824-4614-a11d-6fb2a1477c86/wivozepexozubi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a24cbb7b-3e41-436e-8466-796c6dfc52c3/22139890974.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a624f71-d822-49c6-a2f9-d2aad0b33c42/fidonowomag.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/ancient_india_history_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/mcdonalds_philippines_case_study.pdfIn PDF document text
    • https://s3.amazonaws.com/mafavuzenoliki/82505340934.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/digital_electronics_practical_book.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/zumevoxedaxejipemevajuvof.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/42885084988.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/72291096896.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/gatoxexalerekubudugutop.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007789.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7789 5684 bytes
SHA-256: 18400f854d5fce7bf65e69ca0a889d9684e922ad9dbefa6a730fdc6b3c6d2402
font_01_sfnt_off00008b62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B62 5044 bytes
SHA-256: 9064e17589b0a0db123bcbcb4b531c8c10d1c49222067c7405c046039b07fbe8
font_02_sfnt_off00009c94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C94 14424 bytes
SHA-256: 168e0968dbfa08e82eeb309ed6f87e73be5146718fd4c8201539a168cf1cdd84
font_03_sfnt_off0000cbd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD1 16952 bytes
SHA-256: 10a8b66465cbbb32aea5142eab0028716eac077923c8cb047c75be409cdedd9c