Malicious PDF — malware analysis report

Static analysis result for SHA-256 f542c22199f0a1e8…

MALICIOUS

PDF

41.1 KB Created: 2020-08-08 13:53:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: df801044b271caa4f49783ff910a5e35 SHA-1: 48aff47de53c638a6bd93cf0a39721938799fce8 SHA-256: f542c22199f0a1e83d8ad008c6be566da1a772a2a773650be19cade3bce75ec6
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download for 'Biology practical book for class 12 pdf free download'. This link points to 'ttraff.com', which is flagged as malicious. The document also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify, likely to obscure the malicious redirector. The ML classifier strongly indicates maliciousness.

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=biology+practical+book+for+class+12+pdf+free+download In PDF document text
    • http://files.sarahsiegler.com/uploads/1/3/1/4/131409090/1347536.pdfIn PDF document text
    • http://files.mcmjanitorial.com/uploads/1/3/1/4/131406356/5b2cce2e6e7ba.pdfIn PDF document text
    • http://files.janpeterdegraaff.com/uploads/1/3/1/0/131070792/penorafe.pdfIn PDF document text
    • http://files.bluegrassbabyexpo.com/uploads/1/3/1/6/131606861/gejajunok.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/1/0434/4761/5649/files/75913069605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4731/2789/files/83196503384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/tanixilofugutopukitofol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0544/3237/files/catalogo_vimar_plana_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4964/7261/files/birilolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6265/6157/files/takufisutoxitolopojaguloz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1026/8064/files/vuwapekulutobinuluropax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/loxakifetab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4519/9784/files/30226297862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0097/7829/files/pasikowepebopom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3263/0680/files/15519777546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/vabonuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/poxusulijupidokubeb.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_off00005ff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF9 5952 bytes
SHA-256: 315b78cee32b8f5523c7654a85d62d70279a1a8a86c21d7365b5b389d5d9a988
font_01_sfnt_off0000746c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x746C 10248 bytes
SHA-256: 2d063a92b200c2da01dc079dbaff383e121209e3c0bfdf3dc35115a65cf7d651

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