Malicious PDF — malware analysis report

Static analysis result for SHA-256 92cd788aaa58b359…

MALICIOUS

PDF

41.0 KB Created: 2020-08-15 03:07:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3bac1989081184a27a651fd4c8d1f89a SHA-1: 4b1fe2efec91e59c7a55456bd7d839e8a80f42c6 SHA-256: 92cd788aaa58b35999ab7512cc70ae079e104ac7252616a0e244caba46a2200d
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text referencing 'Skype for ipad 3' and a URL that points to a redirector. This suggests a phishing or social engineering attempt to trick the user into visiting a malicious site. The presence of numerous links, many hosted on Shopify, indicates a link farm strategy to obscure the final malicious destination.

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=skype+for+ipad+3 In PDF document text
    • http://pewexe.earthtocolor.com/uploads/1/3/2/6/132680866/nosefebixewed_zavilam_rozikeri_liranexow.pdfIn PDF document text
    • http://files.rhjerkyoutlet.com/uploads/1/3/1/0/131070450/d9ebcf9ec01a.pdfIn PDF document text
    • http://files.yorkanesthesiologists.com/uploads/1/3/0/7/130739826/nozopamowis-nonenexotud-rifakedabo-dezafuwijizefe.pdfIn PDF document text
    • http://files.micaelablei.com/uploads/1/3/1/8/131871740/2122632.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/1/0433/9499/0247/files/vutar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5792/5544/files/catalogo_avon_16_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8156/3298/files/80462000937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/temple_of_elemental_evil_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8184/3353/files/gilelut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2067/1384/files/18390024610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8702/8641/files/test_de_raven_para_adultos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3376/3746/files/react_link_to_another_page.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9634/2695/files/rexenufudafav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/gejejarukuj.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_off000061cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CB 5260 bytes
SHA-256: 03438391798ca012c368d1f08d4a0fbab33799ae0b7ca555d5659b74f4f74f7e
font_01_sfnt_off000073cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73CC 10316 bytes
SHA-256: 0e2ec3f758dae791d940d6e1a4e6ce2621a96f8c42425868033d10b2ee57ae64

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