Malicious PDF — malware analysis report

Static analysis result for SHA-256 72867d755f283b34…

MALICIOUS

PDF

64.5 KB Created: 2020-08-18 22:03:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: edfc541770a36440a519350b17b53b36 SHA-1: 82ab75a8da453b2b5663a5a58289242d87ca68e0 SHA-256: 72867d755f283b34e159083639839f2a496568f7b546479cadaaee7ff2244589
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to further malicious content. The document body, though partially garbled, includes the same URL and a movie title, likely as a lure. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm intended to obscure the true malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.com/pify?keyword=band+baaja+baaraat+movie+video+song
    • http://files.retreatinsider.com/uploads/1/3/1/4/131453651/kexudatofisef_lejinug_vuvagavaduboduk.pdf
    • http://files.carolinewatson.org/uploads/1/3/1/6/131606677/gajebebawerono.pdf
    • http://files.christianprayerpower.org/uploads/1/3/1/4/131483184/8943997.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/8209/5517/files/kewopokofuzudilujibid.pdf
    • https://cdn.shopify.com/s/files/1/0433/3663/0422/files/93287667031.pdf
    • https://cdn.shopify.com/s/files/1/0433/7300/2902/files/erik_erikson_theory_development_stages.pdf
    • https://cdn.shopify.com/s/files/1/0431/4916/4705/files/2520350727.pdf
    • https://cdn.shopify.com/s/files/1/0433/2165/5464/files/56364370935.pdf
    • https://cdn.shopify.com/s/files/1/0435/6040/3103/files/jekavipunexukolefoxibupaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/7195/5351/files/zivebozatuxajizuku.pdf
    • https://cdn.shopify.com/s/files/1/0435/4428/1247/files/41738089196.pdf
    • https://cdn.shopify.com/s/files/1/0429/2709/5967/files/colbert_report_tv_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0432/2741/4696/files/uwell_caliburn_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/3262/4808/files/35303282840.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/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aa0b.bin
09fba201b18e41c00a1c87124a8a6e94b0548578dee8c7265cac4529a5965733		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA0B 5436 bytes
font_01_sfnt_off0000bc7d.bin
049e626adcf561bf9d935dcf0e85ae64a40059c99b782b8b662dac9a0b889fbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC7D 10120 bytes
font_02_sfnt_off0000df5e.bin
e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5E 16164 bytes

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