Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd88451a51e8aa01…

MALICIOUS

PDF

40.8 KB Created: 2020-08-26 02:16:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3b7464fbc7dfa2f559465d9dd514967d SHA-1: 8748af4cf52f01ce9a227614704163dc1a1c3f98 SHA-256: fd88451a51e8aa01097b1a736b374230be38fa6f5ba451430d81b528622c4f5f
194 Risk Score

Malware Insights

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

The PDF contains numerous links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure for "the outsiders book online pdf". The primary malicious URL is https://ttraff.cc/pify?keyword=the+outsiders+book+online+pdf, which likely serves as a gateway to further malicious content. No scripts were extracted from this sample.

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=the+outsiders+book+online+pdf In PDF document text
    • http://files.wardlawandbrown.com/uploads/1/3/0/7/130775221/169494.pdfIn PDF document text
    • http://files.camera1.ca/uploads/1/3/1/3/131380413/pizixejawij.pdfIn PDF document text
    • http://files.makesomenoise.online/uploads/1/3/0/7/130740490/xopizapo.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/1/0431/1197/3026/files/29563589153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0923/5353/files/98667430687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8973/0467/files/34827695631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1851/0745/files/19976822663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7714/8571/files/18027568790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6921/7699/files/blood_vessels_histology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9586/8057/files/tuvaxejawukelufelabube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1895/6448/files/yamaha_ef1000_generator_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9464/5672/files/aswath_damodaran_books_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8124/4573/files/mixutefivobukujubujumasa.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 8

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_off000061cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CD 5072 bytes
SHA-256: 0aeaaeca400afd87cc97306905b526477f3f670897f1f65848f9b519918713b6
font_01_sfnt_off00007303.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7303 10464 bytes
SHA-256: 1e2f86299091c0db931ec1eadc54947ab4932680e10cebda2ac4207a5fec85ba

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