Malicious PDF — malware analysis report

Static analysis result for SHA-256 8564ef1463ce2cf8…

MALICIOUS

PDF

38.2 KB Created: 2020-08-03 06:06:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b8d77b1877eeb60baa7e353a3607694f SHA-1: 9e2e27f0fb753eef6d365715a331d6a591e522c7 SHA-256: 8564ef1463ce2cf8f8b2141999551b95effdf473f4de421a08698f412d97feae
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains text related to 'solutions manual test banks', suggesting a lure for users seeking academic materials. The presence of numerous external PDF links, including benign ones on Shopify, indicates a link farm strategy to potentially distribute malicious content or phish for credentials.

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.com/pify?keyword=solutions+manual+test+banks In PDF document text
    • http://files.talesfromthetravelingtavern.com/uploads/1/3/1/0/131070859/pivipekuzu-jozirafufa-wevunizogipe.pdfIn PDF document text
    • http://files.pcaspiritstore.com/uploads/1/3/0/7/130775629/6040088.pdfIn PDF document text
    • http://files.lianajoychristensen.com/uploads/1/3/1/4/131454733/ac96a0605f.pdfIn PDF document text
    • http://files.mateoblanding.com/uploads/1/3/0/7/130775734/9b7be4c2c3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/fiwibekamuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/zelodezowuwujug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/jesafarur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2161/5775/files/53424995817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5604/7004/files/timabagomojiguvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3988/1373/files/sigojizowujuvamijizut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6954/6396/files/4076832136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nagexonulelaxefirulilona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xibirinadinabamagumib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5936/3488/files/sopifisut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/xidub.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 6

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_off00004ba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BA2 4924 bytes
SHA-256: 2cb9419f038b66ab69ce44afbc7eb53651f488cc4b8c92ffcab93069d193d0be
font_01_sfnt_off00005c35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C35 9952 bytes
SHA-256: 1f273c111c1706747a4e1b8a76136817696db1efba31ea24db7b1cfcf25820f6
font_02_sfnt_off00007dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFD 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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