Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b280617cdf7196c…

MALICIOUS

PDF

43.1 KB Created: 2020-10-20 00:22:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 6624a717030c23fe0fb9c6499018e5a8 SHA-1: 2755160f0376b9c3ce1f2388c47c48ee37d0f530 SHA-256: 7b280617cdf7196c7f7acfa0c36a851559f80aefa5fd95a5f53661c19550fb00
162 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.club'. The document body, though heavily obfuscated, contains the same URL. This indicates the primary goal is to redirect the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.club/123?keyword=campingaz+party+grill+600+instructions In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366668/normal_5f8731ba3d452.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366316/normal_5f87733bb1fc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381738/normal_5f8e0102a5a0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382412/normal_5f8e037b37af2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378410/normal_5f8c5b0eded19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366371/normal_5f8de98382f8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5f887b8cb7eea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365652/normal_5f87212487283.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f875b5755d97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5f889ad6bc3f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388412/normal_5f8dfe4fc480f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7000/0804/files/38542133258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8996/9820/files/two_ways_to_belong_in_america_main_idea.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9634/1157/files/zemalefinis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4922/1286/files/waromonijafufawapunaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9893/0341/files/38763447709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/3845/5966/files/what_is_winstons_and_julia_new_hangout.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0469/9596/4056/files/sesotavowimibeniv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/6050/1921/files/marcadores_tumorales_prostata.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ae16afb-b259-427a-97c2-36b6bd2b65c5/toroz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0de0a06-7468-4f0a-b8b2-d0335dbe6bd5/93953664197.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000671b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x671B 5604 bytes
SHA-256: 853b1dc2dcc1acd287bd181989f8b3665a5be5710727a82b5cd0bc6a861c02d6
font_01_sfnt_off00007a20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A20 10212 bytes
SHA-256: 03788ef6f9c7816240bfff702a8a4d69cad7e0c20a5737a7612611f319f24714

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