Malicious PDF — malware analysis report

Static analysis result for SHA-256 b87bc0da807e7117…

MALICIOUS

PDF

49.8 KB Created: 2020-08-08 19:22:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b3857c941e16f823792a37990ae92653 SHA-1: ce61147a098025b6e6e03fbdefb19f4a123ed447 SHA-256: b87bc0da807e7117be5df1d46ca3ed7a60f50b894fe72202ff2e8299c0be4595
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple heuristics indicating malicious redirection and a link farm, with a prominent link pointing to `https://ttraff.com/pify?keyword=ajahn+brahm+books+pdf`. This URL is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and references to book downloads, suggesting a lure to a phishing or malware distribution site. The presence of numerous external PDF links, many hosted on Shopify, further supports the link farm heuristic.

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=ajahn+brahm+books+pdf In PDF document text
    • http://files.childrenandthechurchpublishing.com/uploads/1/3/0/8/130814669/foluka-fulovodibu-zamemenojesag-misuzupasod.pdfIn PDF document text
    • http://files.devitawellnessnow.com/uploads/1/3/0/7/130740357/5241551.pdfIn PDF document text
    • http://files.racheleveholmes.com/uploads/1/3/1/8/131856664/wipunizibozikof-buderopegelo.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/1/0433/2853/6731/files/vokize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9095/9766/files/merger_and_acquisition_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9890/6528/files/tuwebenibavaraz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2953/4632/files/75504443584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6189/8390/files/tom_apostol_calculus_vol_1_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4650/files/73456213066.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/sewezuzovubugapudasigune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/79265304831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4988/5606/files/butajebalimekofamowuzineg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/zevukagosozufidodoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3811/3955/files/95699007250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6314/8706/files/11036720893.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 5

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_off000083f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83F0 5516 bytes
SHA-256: b15fb6501621bbce76fe9033c48f8fe8b1b31ab98bb5247fefdb75d168bce886
font_01_sfnt_off00009684.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9684 10656 bytes
SHA-256: 0bbe7733778027d15c755727c06621166e9698cd848fc3e0d0891b2ec6be3bba

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