Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c74a30a044ceb5d…

MALICIOUS

PDF

44.7 KB Created: 2020-08-14 16:09:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 44f990e30981c403753c3da8c88c3694 SHA-1: a2001aa704fb43ad52028e7e432ec4b3ba243660 SHA-256: 2c74a30a044ceb5d31dac9bdcf3b31572d6ca6e26e4136639b44141f11399e09
210 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to educational content ('chemistry dimensional analysis worksheet'). The primary malicious link, https://ttraff.cc/pify?keyword=chemistry+dimensional+analysis+worksheet%2523+6+answers, likely serves as a gateway to further malicious content. The presence of a link farm heuristic further supports the malicious intent of distributing links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.cc/pify?keyword=chemistry+dimensional+analysis+worksheet%2523+6+answers In PDF document text
    • http://files.hotgandts.com/uploads/1/3/0/8/130813413/zavedevobufutopuso.pdfIn PDF document text
    • http://files.susanbibulaphotography.com/uploads/1/3/1/3/131380612/poderuxogofizef_guludodet.pdfIn PDF document text
    • http://xipil.ladiesinfirst.com/uploads/1/3/0/8/130814328/21b685dca90.pdfIn PDF document text
    • http://senizif.sgkey.com/uploads/1/3/0/8/130813528/pafugedoterud-medirotuwaze-rikuvonipimag-xelufig.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/1/0436/9996/2024/files/91067625394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/2075/0745/files/sikatop_armatec_108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/8245/1861/files/78175438090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1096/4131/files/fukefitidetobebawixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/96014678692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4414/1218/files/bacteremia_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9633/4753/files/liwifisavuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5444/8286/files/zufajofuvidalilupax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6481/1935/files/medifodivikexasigukuxi.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_off00007125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7125 5228 bytes
SHA-256: 3d5afc71a7802162b135ed72dcece1d4d594f522cd286682b7f0cb0a0a2daa0b
font_01_sfnt_off000082d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82D7 10280 bytes
SHA-256: 8e4df4e167251403f81fea1c5cc86b03964c251edc8fe7b119f0d15790850b47