Malicious PDF — malware analysis report

Static analysis result for SHA-256 196cccccb40dd8cc…

MALICIOUS

PDF

51.6 KB Created: 2020-08-16 20:23:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3ffdd3f472c8f578fa1aa45da5cf62f7 SHA-1: ec636f28cf0a240c91fcd32ce064c40dd4499d67 SHA-256: 196cccccb40dd8cc980572bf95d82f652a315c89b7e5c115047654f7e1356204
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to a redirector URL (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, also contains this redirector URL, suggesting it's the primary lure. The presence of a link farm and a malicious redirector indicates an attempt to drive traffic to malicious infrastructure, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.ru/pify?keyword=android+listview+adapter+simple_list_item_2 In PDF document text
    • http://files.bjbeautifulthings.com/uploads/1/3/0/9/130969428/5b7da.pdfIn PDF document text
    • http://ruxilubu.artbyvictoriajimenez.com/uploads/1/3/1/8/131871390/koxejupufima.pdfIn PDF document text
    • http://files.kdgdistribution.com/uploads/1/3/2/6/132695306/togalasi_pivotinanulo.pdfIn PDF document text
    • http://defidi.krististotalhorsemanship.com/uploads/1/3/1/3/131380429/gopidaxigilapitonama.pdfIn PDF document text
    • http://vekuz.rajanibalaramfineart.com/uploads/1/3/0/7/130738697/ccd45.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1753/3597/files/advertising_and_sales_management_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8638/0189/files/jefagikugudepumujajurek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2113/9096/files/70124554693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4521/5656/files/zixiremexezefap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/sovedowinusuwinewekuxavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5341/5576/files/beagleboard_x15_schematic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8697/8984/files/63683342366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0423/9770/files/ankle_sprain_exercises_nhs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9898/1030/files/marumekerevuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1820/7911/files/poulin_wild_thing_chainsaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/20745245188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5167/7856/files/woraxuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7529/5640/files/g2._0_unpossible_erste_vorherige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/massey_ferguson_135_repair_manual.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7948 5196 bytes
SHA-256: 407fe34e00d52b9bb9da88f3966387754eb8d023b090621b9a5172898fdfb117
font_01_sfnt_off00008af0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF0 12248 bytes
SHA-256: f560953ae3e91874671c1128c9faa3365cfcd04d6c232d5e8ae04e2ab401f6cc
font_02_sfnt_off0000b2aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2AA 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176