Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ac87cdd5a101c8f…

MALICIOUS

PDF

56.4 KB Created: 2020-09-02 19:36:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 255da921a9cc05ad10f8e4e227dcd511 SHA-1: ea12d58b7a13369ceb74b7ba007fc94a40a6b649 SHA-256: 0ac87cdd5a101c8fc9acfe758dca281acb7d1fd60acc2251b616b2925f0517c0
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector infrastructure at 'https://ttraff.club/wix?keyword=angularjs+template+ternary+operator'. This suggests a phishing or scam attempt, likely disguised as a free download to entice clicks. The ML classifier also strongly indicated maliciousness.

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wix?keyword=angularjs+template+ternary+operator In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/5b9365_5ae3ac7b718f49f7a43481ef0f836903.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/81ef4b_87d0c1e2447049e0b2b601f6334353bd.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/52b593_3febaa233aa34f61be1b3f73abe4fbb9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/89064d_92d6bd36d3da4249ad6a2130f45480e5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/a18aa6_57df01d39ec64097a1359892b05d7601.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_9ff3a7138cc3429ea17e92826c9049c5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1c8c1e_e7e2bea5d10847e4afc477f320aacc1c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/bae363_f90153d56e5a4c37af16b591db426e94.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/de3d83_18499973ffae4a3783f9c1a10d77b758.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7831/0306/files/76262530845.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/porotox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/11758517286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6433/6290/files/vemonamesuvu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007bb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB1 5304 bytes
SHA-256: 6ce5162c499cf69746118a529766591e13fd29dfa80311fbc9ae5b891a108816
font_01_sfnt_off00008dbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DBC 15636 bytes
SHA-256: d0580351775abbe7680d8f9cc9b4e215d97741f9cd3d213eb1b0d8e3d4628973
font_02_sfnt_off0000bf3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF3E 16144 bytes
SHA-256: e15a1281d5822949f1e77669e824eae5514ae62c72e5676204b82dc78d7785f6

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