Malicious PDF — malware analysis report

Static analysis result for SHA-256 706e78dfd4457f52…

MALICIOUS

PDF

38.8 KB Created: 2020-08-31 03:19:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe394b17810f9e8dde729f8cc32b8907 SHA-1: 06e791e55b5512e8cb160fe153efefc89e8f0438 SHA-256: 706e78dfd4457f52b2d5ac7d7d75454e401ba610d1cb47807b0b696aae6bb48b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to funnel victims to malicious sites. The document also hosts a large number of external PDF links, many pointing to benign Shopify domains, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly indicated maliciousness, and the overall structure points to a phishing or malware distribution attempt.

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.cc/wix?keyword=chest+sim+for+clash+royale
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/1063/7476/files/jukotiroji.pdf
    • https://cdn.shopify.com/s/files/1/0434/4374/9029/files/17854340472.pdf
    • https://cdn.shopify.com/s/files/1/0430/0960/5791/files/fever_pitch_definition.pdf
    • https://cdn.shopify.com/s/files/1/0434/2785/6536/files/connect_to_higher_self_guided_meditation.pdf
    • https://cdn.shopify.com/s/files/1/0438/9086/8379/files/luxuledunuxamidokadinupe.pdf
    • https://static.usrfiles.com/ugd/0ebc1f_a0245b9d51aa462890d57d6fd1f041a9.pdf
    • https://static.usrfiles.com/ugd/353d00_d342de0de327452984b12d0ad1729403.pdf
    • https://static.usrfiles.com/ugd/43d598_b464fa883a044e5c9bbe546a2f70abcf.pdf
    • https://static.usrfiles.com/ugd/b0cd75_ce2b2a188e324222bd19fd02939bbd87.pdf
    • https://cdn.shopify.com/s/files/1/0435/4513/3215/files/nolegepezutadonod.pdf
    • https://cdn.shopify.com/s/files/1/0434/6950/4662/files/genie_hd_dvr.pdf
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/koi_fish_columbus_ohio.pdf
    • https://cdn.shopify.com/s/files/1/0432/7332/2664/files/chair_in_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/pisibajapejifudix.pdf
    • https://cdn.shopify.com/s/files/1/0438/2782/2752/files/adobe_acrobat_reader_latest_apk.pdf
    • https://cdn.shopify.com/s/files/1/0438/1471/5554/files/wemijebinagegopileb.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5237/files/14176488971.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059de.bin
d41325c1d80ad1c06c651ae2416e776f419e7c73cac95fa53650a210f6de35cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59DE 5128 bytes
font_01_sfnt_off00006b31.bin
f942ddddf997e2af9fb4c8dd30653f9a1970d638ea604ee1329fd638fdcb1c74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B31 10556 bytes

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