Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a77ef3a5e0db47e…

MALICIOUS

PDF

40.0 KB Created: 2020-08-03 07:30:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 373bedacd252008cb0f4e007dd6deaeb SHA-1: e0000c565be409e0065a959bdf9bdeed19fa2f63 SHA-256: 1a77ef3a5e0db47ef7a402642261402683cd4419c747be088914010a008ce1c8
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=download+the+notebook'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into downloading further content. The presence of a large number of external PDF links, many hosted on shopify.com, indicates a link farm strategy, likely for SEO manipulation or to distribute malicious payloads. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=download+the+notebook In PDF document text
    • http://files.susanvanwagoner.com/uploads/1/3/1/0/131070452/8318724.pdfIn PDF document text
    • http://xeroguve.brittneynicolefloristry.com/uploads/1/3/1/0/131071157/kobemawanaja.pdfIn PDF document text
    • http://files.drlchen.com/uploads/1/3/0/7/130739489/vegenezam-gevisavu.pdfIn PDF document text
    • http://files.steam-era.com/uploads/1/3/2/8/132815123/6544328.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/1/0431/8868/2916/files/69592141418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2523/5111/files/komegogaxurudase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3421/4561/files/install_galliumos_on_chromebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/zewaxebep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5959/9765/files/40888129695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2316/3801/files/vanirefalob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8262/6710/files/zifugerezojejelepapovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5100/7638/files/wipikilinazu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/momevome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/47559814868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3337/9487/files/67606838947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7654/0834/files/vixejafodikazidaziv.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

Related samples 3

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F3 4932 bytes
SHA-256: ff76c268a8c8641f9f29e46820e8698af7b4698679bf45c530e6c1e2b70988f8
font_01_sfnt_off000071cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71CF 9896 bytes
SHA-256: 03a5373e97b421f4b7df9aa4d25d67fc8f6ba295b6a1666bd2b62be708e126e6

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