Malicious PDF — malware analysis report

Static analysis result for SHA-256 b46291ff032715fe…

MALICIOUS

PDF

70.5 KB Created: 2020-08-31 03:00:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5f664d96198e2eedc8ff4b0e815d1bc8 SHA-1: 6f0abb005f26c618e2a8b07b296c127c2fd96ade SHA-256: b46291ff032715fe6ecc8b5c55dca57fc78546f806844d23be3861ca149c4a7a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=precalculus+with+limits+3rd+edition'. Additionally, another critical heuristic indicates a PDF link farm with 26 external links, many hosted on cdn.shopify.com. The document body contains the same malicious URL, reinforcing the lure. No scripts were extracted, but the primary attack vector appears to be directing users to a potentially malicious site.

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/wix?keyword=precalculus+with+limits+3rd+edition In PDF document text
    • http://www.LarsonPrecalculus.comIn 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/1/0433/9413/8277/files/6482732242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5586/6263/files/sample_student_autobiography.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1223/5174/files/sasamovarefurexuvilofuxas.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b48b60_0b05c0bc75b6477f83299510f03b6578.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/7ff653_09f493f6abbe418ea813c6784b9a40a5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5835/6639/files/gumapofisusaxidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2045/8906/files/inkstar_tattoo_machines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/8630/0572/files/zulowavixakotot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6224/8102/files/delitadokurexamutuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43561311815.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_b8a150c37262438780fc918b9154f90a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/8b49c6_80a76790d20447d8ba8b339e1b6a1db5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e2f197_14fb65e6fe934a64bcb52cf5da9b2e3d.pdfIn PDF document text
    • https://www.nxtbook.com/nxtbooks/ngsp/finanIn 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 8

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_off0000b909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB909 5436 bytes
SHA-256: d13efa2b178a0d6f6a71d2e75109d9be0bd96e8f413ffec46575cf9c289706b9
font_01_sfnt_off0000cb5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB5D 14060 bytes
SHA-256: 563ff871a32aefe152fff63629615dbb70daefda9b24d85e92e7a7c9c13dda15
font_02_sfnt_off0000f752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF752 16132 bytes
SHA-256: 6820151f9a4816bccc9e85e605aef44ce22c8924dfcccd161584754f275bf028

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