Malicious PDF — malware analysis report

Static analysis result for SHA-256 42708e22bad4e28a…

MALICIOUS

PDF

49.5 KB Created: 2020-08-12 07:42:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75426207d4c64618d188e78d40ca9621 SHA-1: 4dcb1838049921c52be13629e332c14c1487e6a5 SHA-256: 42708e22bad4e28a305e8e3a179d49ac20570e84172b55874dd11ad12da532f1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.com'. This suggests a link farm or SEO poisoning tactic designed to drive traffic to malicious sites. The document body, though malformed, contains the same title as the malicious URL, reinforcing the lure. No scripts were extracted, but the primary attack vector is the malicious redirection.

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://ttraff.com/pify?keyword=clasificaci%25C3%25B3n+de+los+hipoglucemiantes+orales+pdf
    • http://files.sapphiredobermans.com/uploads/1/3/1/4/131453395/c16ea.pdf
    • http://vemale.bessastadir.is/uploads/1/3/0/7/130776661/patesutexizomugafe.pdf
    • http://files.bookscapes.co.uk/uploads/1/3/0/7/130776589/2880147.pdf
    • http://files.va-sg.com/uploads/1/3/0/9/130969357/f9274d888565e.pdf
    • https://cdn.shopify.com/s/files/1/0437/0667/9447/files/36922169389.pdf
    • https://cdn.shopify.com/s/files/1/0433/9276/2017/files/33213298953.pdf
    • https://cdn.shopify.com/s/files/1/0437/1628/0469/files/bosquejos_para_predicadores_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/revobetolipebikujojobowol.pdf
    • https://cdn.shopify.com/s/files/1/0427/5362/2182/files/business_process_mapping_book.pdf
    • https://cdn.shopify.com/s/files/1/0439/8045/6094/files/libro_aura_soma.pdf
    • https://cdn.shopify.com/s/files/1/0437/9954/3970/files/xejekigotofevu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0412/4580/files/49670286867.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87664315042.pdf
    • https://cdn.shopify.com/s/files/1/0431/7249/5519/files/australian_triage_scale.pdf
    • https://cdn.shopify.com/s/files/1/0431/5847/0810/files/11854212638.pdf
    • https://cdn.shopify.com/s/files/1/0433/7090/5750/files/81611559691.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007fba.bin
9916f557f07f3f826721f1ec17be411970484c185594ad96df81c1ca926d7e80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FBA 5608 bytes
font_01_sfnt_off0000925f.bin
8033fd70987af1251aac1210a70e60a2dcd57e2e2ba6b94124e2c2251d83bf9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x925F 11156 bytes

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