Malicious PDF — malware analysis report

Static analysis result for SHA-256 b015efd993aacf43…

MALICIOUS

PDF

43.8 KB Created: 2020-08-03 23:40:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 61b78217946434736ff09c7e2b4f4ffa SHA-1: 329c9664e0f2a111b465a42e19b982682e82ec38 SHA-256: b015efd993aacf437db3775561eb01c07de52af975c8b83907d65cb13dd5f9df
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests a link farm or SEO poisoning attack designed to lure users to malicious content. The document body, though heavily obfuscated, contains text related to 'Analisis de puestos en recursos humanos pdf' and mentions 'wkhtmltopdf', indicating it's likely a lure document. The presence of numerous external links, including the malicious redirector, strongly supports the attack pattern.

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.ru/pify?keyword=analisis+de+puestos+en+recursos+humanos+pdf In PDF document text
    • http://files.uintahmuseum.org/uploads/1/3/0/8/130874585/9a05b3e.pdfIn PDF document text
    • http://files.wetravelgeorgia.org/uploads/1/3/0/7/130740625/bipoza.pdfIn PDF document text
    • http://files.apafss.org/uploads/1/3/1/3/131378821/9993804.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/1/0431/2806/2109/files/integer_max_value.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/pojujigopasozudamafusavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9008/1960/files/wagujema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1411/1903/files/kagalubamibidite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5228/4566/files/6666686602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/41892429841.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6880/1695/files/33335376576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/mesetew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2004/1886/files/sedemad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8278/4676/files/rijazaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4143/8366/files/39408869726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/amana_washer_troubleshooting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexidemunuviviradepinitim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6647/5174/files/jagamifapekuwub.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_off00006d1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D1E 5384 bytes
SHA-256: 60002b24d429ea83fcbed55c5d9dc3476f34e66ec4a270ae38cf8e13899d01f2
font_01_sfnt_off00007f46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F46 10668 bytes
SHA-256: 860a87f2c9f6fa48a870984e93dbb87ee553780e5344fa1a4684424b7d805813

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