Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ac7a9674ec81401…

MALICIOUS

PDF

44.3 KB Created: 2020-08-19 20:26:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cad5b185d5cb2f1aa817083eba3c155c SHA-1: 8f2cf045b482383c6393dc548bd5bc5bce53ec7a SHA-256: 1ac7a9674ec81401f65d8c7b46d8bb53c4c0d93430294294894900e0b633aae1
152 Risk Score

Malware Insights

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

The PDF contains a prominent link to `ttraff.com`, identified as a malicious redirector. The document body also contains text related to downloading a movie, suggesting a lure to entice users to click the malicious link. The presence of numerous other links, many pointing to `cdn.shopify.com` with PDF filenames, indicates a link farm designed to obscure the malicious destination. The ML classifier strongly flagged this PDF as malicious.

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=agneepath+full+movie++hd+480p
    • http://vanab.sparky3d.com/uploads/1/3/0/8/130874493/bubizafoledivom_woxifurog_gamowarufaw.pdf
    • http://disejaz.glassbrookvocal.org/uploads/1/3/1/4/131437423/jovaxarividedazasola.pdf
    • http://files.mrsoneyscomputerlab.com/uploads/1/3/1/0/131070113/zevakugi.pdf
    • http://files.beyondthestorycoaching.com/uploads/1/3/1/4/131438299/pimetukusa-gidibakurebeko-govonuli-sorigi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5523/4710/files/ase_study_guides.pdf
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/nikibeki.pdf
    • https://cdn.shopify.com/s/files/1/0437/3492/5463/files/72916327511.pdf
    • https://cdn.shopify.com/s/files/1/0433/5822/4549/files/jurabekodebotomukikeroj.pdf
    • https://cdn.shopify.com/s/files/1/0436/1686/2371/files/ssl_proxy_unblocker.pdf
    • https://cdn.shopify.com/s/files/1/0431/1829/7245/files/vewudanasumikelego.pdf
    • https://cdn.shopify.com/s/files/1/0428/2286/0966/files/44536503999.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/xijikexikakem.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2277/files/doduzijemagusege.pdf
    • https://cdn.shopify.com/s/files/1/0439/7613/0718/files/bookseller_of_kabul.pdf
    • https://cdn.shopify.com/s/files/1/0430/9952/1178/files/wiwetifime.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/85324178407.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b79.bin
fa5779afc414873383688b30e9b8c70eb4f7245c95e32d6b22f2f9f19c43bcb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B79 5536 bytes
font_01_sfnt_off00005e3c.bin
c508d7b069c317d8eeb96d2f2689e9cefb43f41c28425664f7969bd69bc7f7dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3C 9844 bytes
font_02_sfnt_off0000805b.bin
fe139538347d724e6b27dab22ead91fbb1eb3470a850438049392072e7f85921		 pdf-font-stream PDF embedded font (sfnt) at offset 0x805B 16208 bytes
font_03_sfnt_off0000959c.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x959C 4324 bytes

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