Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa2efa5652758446…

MALICIOUS

PDF

42.5 KB Created: 2020-08-02 00:48:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 32e4248de3276dcf97f19570d49bec47 SHA-1: ddd76cae4320262aa188df3d213f037ef9935d1c SHA-256: aa2efa56527584467985882d364f67d38fdc8252130b3e6cac90bb74f94ee938
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass external PDF link farm, suggesting the document's primary purpose is to distribute links to other potentially malicious content. The ML classifier strongly supports the malicious verdict. No scripts were extracted, limiting the analysis of specific execution behaviors.

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=pdf+full+form In PDF document text
    • http://files.robinroenker.com/uploads/1/3/1/3/131379356/filozaloda-bowutepidizuri-xogujukozeb.pdfIn PDF document text
    • http://files.jazikatxox.com/uploads/1/3/2/6/132681450/50e5d51894.pdfIn PDF document text
    • http://files.planteachlove.com/uploads/1/3/1/4/131453348/6b60d.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/1/0431/7272/4900/files/5042902889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6545/0391/files/dedozeda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/supozavejavobebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1137/5267/files/jidine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5636/4711/files/rawonevujafupivilof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5282/6773/files/pofifidivexamabasidafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8678/2369/files/bupowitebemijakitekudawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8491/3565/files/58406102447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5085/0714/files/sedokizim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7415/0809/files/netopetalatilufababup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2926/4546/files/kofukuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2969/9482/files/88320410038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2640/7833/files/fundamentals_of_electric_circuits_6th_edition.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_off00006417.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6417 4664 bytes
SHA-256: ca986e367b92f4af6494c6c1e63cf1828ca0c68f9a92b107888bc98908004b98
font_01_sfnt_off000073df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73DF 13224 bytes
SHA-256: e33405274abb5f711870b44eaa89126a38fe932b3f817560ecb96348545df77b

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