Malicious PDF — malware analysis report

Static analysis result for SHA-256 62ce83787276a7aa…

MALICIOUS

PDF

46.1 KB Created: 2020-07-29 22:41:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ba5fb5931482fe54bdb083c0515b5a50 SHA-1: 77265c862501b6d11d7684d30a42703d57bd7420 SHA-256: 62ce83787276a7aa40dfcf4687c23c6e96b4b56ab56525c456bcc7cbe92ed6a5
194 Risk Score

Malware Insights

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

The PDF contains numerous links to SEO redirectors, specifically `https://ttraff.com/pify?keyword=administracion+de+recursos+humanos+bohlander+17+edicion+pdf`, which is flagged as malicious. The document body, though heavily obfuscated, suggests a lure related to a book download. The presence of many external PDF links, some pointing to benign Shopify URLs and others to unknown domains, indicates a link farm strategy to distribute the malicious redirector. The ML classifier also strongly flagged this PDF as malicious.

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=administracion+de+recursos+humanos+bohlander+17+edicion+pdf In PDF document text
    • http://files.totalstationsstore.com/uploads/1/3/2/3/132303163/6848148.pdfIn PDF document text
    • http://files.merwininsurance.net/uploads/1/3/1/4/131453068/xuruvibi.pdfIn PDF document text
    • http://files.a-pathwaytopeace.com/uploads/1/3/1/3/131398141/lafevokon.pdfIn PDF document text
    • http://files.katiegmitchell.com/uploads/1/3/0/7/130775867/9284372.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/1/0438/6773/4171/files/tokuranosojemavinawukir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9640/8218/files/pavalikozuvopebuwaxap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8740/4968/files/11339751633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57148414383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0269/9681/files/sevavip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2282/6142/files/17039788616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pinabazebovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gubiwunezekubukezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0019/1400/files/42119039710.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8777/4374/files/63287595413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4338/9597/files/jojerudipululozetejuketa.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_off000070ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70AD 5540 bytes
SHA-256: db2cd6f6d90dd0e88929d1efb08b7bc398c2145c5371b242baceb331d8360818
font_01_sfnt_off0000834b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x834B 11544 bytes
SHA-256: 49def1fbfd83022a9296683d15ddca5eee7e92df7b04a3ec7182ef7ba3ffeb53

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