Malicious PDF — malware analysis report

Static analysis result for SHA-256 323b343dc54ca2b9…

MALICIOUS

PDF

39.2 KB Created: 2020-08-21 09:21:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4434fbe129580285fafc96b615be323f SHA-1: e12c06e49234b508f351cf57ee363db423a4ed79 SHA-256: 323b343dc54ca2b94b12acd10ad9500a31434e02c60066478b63c63df1a2cfc9
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL, https://ttraff.com/pify?keyword=approximation+questions+pdf+for+rrb+po, is likely used to redirect users to a malicious site. The document body, though heavily obfuscated, contains references to the same malicious URL and other Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic to distribute malicious content.

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=approximation+questions+pdf+for+rrb+po In PDF document text
    • http://files.thevillagelhc.org/uploads/1/3/1/4/131409098/gewazixoniz-difedoduxijob.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/1/0436/3000/2336/files/hepatitis_c_treatment_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0586/9217/files/fujisofolalufapikoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0917/1879/files/minecraft_base_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0147/9321/files/lixukafare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1726/3510/files/28145138468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9593/9488/files/83362434717.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8132/5980/files/termination_during_probation_letter_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/5755/4075/files/57990940794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7972/8281/files/dovozutijulutemiwebade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/jiputekonaku.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 1

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_off00005737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5737 5480 bytes
SHA-256: faa6db491619d141a4bdb34698db9f9ede36cb71254c76ee59653e10f85faedf
font_01_sfnt_off000069b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B6 11428 bytes
SHA-256: 2fba4363da160119a1fff0079c5edbdcbf9f1d3e28948d7e7e26d688f80b8837

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