Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa87ceaf7b5ed27d…

MALICIOUS

PDF

37.7 KB Created: 2020-08-15 04:58:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e7ff6c02253ec17fa42e01b7e55055a1 SHA-1: b7de1aa48421e37b828975351779bd1212489397 SHA-256: aa87ceaf7b5ed27dcd35a3f0f6490ad1bc98986562ece42c370e5fb7d30ad0b0
194 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'autocad furniture free 2d' and a URL that appears to be part of a link farm designed for SEO manipulation. The presence of numerous links, including one to a malicious redirector, strongly suggests a lure to external malicious content. No scripts were extracted from this sample.

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=autocad+furniture+free++2d In PDF document text
    • http://files.okasparagus.com/uploads/1/3/2/7/132712315/mogazepodixabo.pdfIn PDF document text
    • http://files.longlakehounds.com/uploads/1/3/0/8/130813755/gedaseriguropa-xavapolubeviwa-soxukavesidumor-kagixudox.pdfIn PDF document text
    • http://dukogesa.kimberlyjherb.com/uploads/1/3/0/8/130874134/lerotojep-lenopimudom.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/1/0430/3847/4397/files/pojuwum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7375/7603/files/zizazerijimajilovutepizad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4151/2855/files/81712398054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4396/2532/files/past_simple_irregular_verbs_exercises_2_eso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9801/3850/files/xizawotuduvebugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2406/3392/files/the_duff_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1463/5165/files/xijufix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9765/2376/files/cm_ruler_measurement_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5082/6905/files/tesis_valores_morales.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 4

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_off00005810.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5810 4928 bytes
SHA-256: 0edadd2b33f94e56e385e0b291c5b8f91372e6b33bcda3496fd6869c5091b73e
font_01_sfnt_off000068db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68DB 9816 bytes
SHA-256: 0e10e72929e5009eedc6c524a03c50e0bfd81db51eaacc53a0b533cafa283f85

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