Malicious PDF — malware analysis report

Static analysis result for SHA-256 42cb3e295eea93f8…

MALICIOUS

PDF

43.0 KB Created: 2020-08-06 15:33:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ca81d2cad87cc6dc951c89e7f61f42c SHA-1: 849dd2ee6fc14bcd5bc72f400d1fec7fafb60f6a SHA-256: 42cb3e295eea93f8629c2ce0d5ce3d3594bced89640f909ee04e24305684f72a
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The document body, though partially corrupted, contains text that suggests a lure for a free PDF download, specifically mentioning 'Cazadora de hadas pdf gratis'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of the redirector.

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.cc/pify?keyword=cazadora+de+hadas+pdf+gratis In PDF document text
    • http://files.vintageglamper.com/uploads/1/3/0/7/130776027/4895771.pdfIn PDF document text
    • http://files.cashatmservices.com/uploads/1/3/1/4/131413485/rejer_jabaril_zebegokurob_nexenubegip.pdfIn PDF document text
    • http://files.victorialrudolph.com/uploads/1/3/2/7/132712154/mipalova.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9736/7452/files/piramide_alimenticia_para_nios_de_primaria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3867/1010/files/korevujox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7070/8125/files/bullworker_workout.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5805/2763/files/1358941880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/68769425665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7097/0274/files/53860429113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xidab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2225/3208/files/angina_de_pecho_unam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9360/6046/files/paduxop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/24863128440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3375/4773/files/japanese_iptv_m3u.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0935/9520/files/remox.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A8C 5028 bytes
SHA-256: 85708bdd2121e560f137a8159d014802333a03d6d85a3720518a38ea9f49c218
font_01_sfnt_off00006bcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BCD 11068 bytes
SHA-256: dbfb9273620df7dc40cd50230163f3e1a9506ff39a2c64e3381a076d97f93f6e
font_02_sfnt_off00008fb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FB2 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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