Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b155d2325b11793…

MALICIOUS

PDF

34.7 KB Created: 2020-10-30 09:38:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62750221a4194d134a8c7e19be98c051 SHA-1: 68663cf29784c1f0143fefd00b6132810d4c82db SHA-256: 9b155d2325b1179344780a9856210aa197462de06808a9b9d1709d47567a4d2f
152 Risk Score

Malware Insights

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

The PDF contains a link that redirects to known malicious infrastructure, disguised as a free book download. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and the embedded URL strongly indicate a phishing or redirection attempt. While no scripts were extracted, the PDF structure and embedded links are sufficient to infer a malicious intent to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 3

  • 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.
  • 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://ggtraff.ru/aws?keyword=real+book+6th+edition+pdf+free+download+bass+clef
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0483/9810/6776/files/71111616256.pdf
    • https://s3.amazonaws.com/susopuzupure/carrier_chiller_30gx_alarm_codes.pdf
    • https://s3.amazonaws.com/pazifetanegapu/74931006968.pdf
    • https://s3.amazonaws.com/robumuduluwise/preeclampsia_eclampsia_y_sindrome_de_hellp_2015.pdf
    • https://uploads.strikinglycdn.com/files/43d45736-e19f-42e5-b7a1-315ff8415c67/sanikesidatupodiwas.pdf
    • https://uploads.strikinglycdn.com/files/632b6dae-0123-4699-9c68-7fdc619e4166/minna_no_nihongo_1_ting_vit.pdf
    • https://uploads.strikinglycdn.com/files/8d195bf5-061a-4c5f-b101-e23b92fafa05/among_the_barons.pdf
    • https://cdn.shopify.com/s/files/1/0266/9127/2903/files/3458533112.pdf
    • https://uploads.strikinglycdn.com/files/800c1f01-60ce-46b0-a5db-3bd97c3adb51/samsung_rf268abrs_service_manual.pdf
    • https://s3.amazonaws.com/webipejonavuv/97920452665.pdf
    • https://s3.amazonaws.com/gonuxiwela/free_race_car_sponsorship_proposal_template.pdf
    • https://uploads.strikinglycdn.com/files/6e56b147-3ff5-4f4a-a93c-2c4358b30d4b/76060522563.pdf
    • https://uploads.strikinglycdn.com/files/e6f34630-18a7-447d-9aad-7793debf3bd4/bosedudaxajeporazofefu.pdf
    • https://uploads.strikinglycdn.com/files/d32b38fd-7d54-453e-bf0c-802725974051/xitef.pdf
    • https://uploads.strikinglycdn.com/files/b5d07323-daf4-42f7-8ac9-c07bf9debaf2/luginenaburaralovoxobid.pdf
    • https://s3.amazonaws.com/zetare/piwozamemokalubadekaz.pdf
    • https://s3.amazonaws.com/bezegoluzose/polijenutigefofenoj.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006706.bin
28bcfd66a8b67f2851fd78ad49ae93f03a85c322dffe5b2b5fa040f279cd9d6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6706 5700 bytes

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