Malicious PDF — malware analysis report

Static analysis result for SHA-256 14bb8807f313bd95…

MALICIOUS

PDF

50.6 KB Created: 2020-08-16 19:20:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aae84d122fd6c6b8fe963bc109e92c9a SHA-1: 6ae4ef205d9a7fdb23b74f92cf2c5ba788397cb2 SHA-256: 14bb8807f313bd95bcc5d720636aa3f03abaa01118049a3ba606df14cd7b61df
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to a malicious SEO link farm, specifically `https://ttraff.com/pify?keyword=patellofemoral+knee+pain+exercises+pdf`. This indicates a phishing or scam attempt, likely using a lure related to health exercises. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted, but the embedded links are the primary indicators of malicious intent.

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=patellofemoral+knee+pain+exercises+pdf In PDF document text
    • http://files.lepinkandco.com/uploads/1/3/2/8/132814166/desuviwisu.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/1/0434/7065/1542/files/amiodarone_infusion_protocol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1047/3633/files/54606944698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4078/5062/files/gajekunaviwowixatejumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1978/6645/files/30326559336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/nudur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9897/2066/files/69288777219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8373/3921/files/78896412971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6495/8879/files/47175949597.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6663/9014/files/60488186919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2562/8327/files/flyff_blade_equipment_guide.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 4

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_off00007a85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A85 5220 bytes
SHA-256: 8485e7cad76f0bc4940149c7502c15458fafdbe2e0132be146b8b80edd918047
font_01_sfnt_off00008c29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C29 10284 bytes
SHA-256: a0e97bf8fde4db4049405033b5bfd7326a0a46ec1f2b3664dd0f1e4f1b935f73
font_02_sfnt_off0000af57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF57 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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