Malicious PDF — malware analysis report

Static analysis result for SHA-256 82a2d4323d1de8ba…

MALICIOUS

PDF

47.1 KB Created: 2020-08-07 05:43:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 11e5b605e61e492637bca2205ddb4596 SHA-1: fcb9838ac61d4df0f757813f78e3eff9ac022616 SHA-256: 82a2d4323d1de8baa651ac868e2946607d7c1b657d49f13b390b040a99080caa
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the primary redirector URL and references to other PDF files hosted on Shopify, suggesting a link farm or SEO poisoning tactic. The ML classifier also strongly flagged this PDF as malicious.

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=list+of+adjectives+to+describe+a+person+pdf In PDF document text
    • http://files.chiropractic-now.com/uploads/1/3/0/7/130775265/dujunuwog_ponilavanizo_lukuwovoba_wugenulam.pdfIn PDF document text
    • http://files.projectufo.org/uploads/1/3/0/7/130739381/4877757.pdfIn PDF document text
    • http://jepawe.flyingchangesequestrian.com/uploads/1/3/1/4/131453329/6941075.pdfIn PDF document text
    • http://files.johnmorganpoet.com/uploads/1/3/1/4/131453650/8838467.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/1/0438/6432/6299/files/tevaxajepuzonobevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9769/9992/files/wishes_fulfilled.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3015/0309/files/gepoxazemotipenipegu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4384/0412/files/gusakamuneritagiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86399573169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6989/8909/files/10130365550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1371/6643/files/dapaxaselakeludobewavaka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2258/0886/files/58259514062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5650/3707/files/simple_adding_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8179/3698/files/how_to_print_avery_labels.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7589/4422/files/31680175582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7831/1326/files/minecraft_forge_1_8_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3323/9457/files/39073043703.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 8

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_off00007a4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4F 5336 bytes
SHA-256: adb36f925d8d6fb8526ccd859a1468aa5b2938ca79bed11f4d4a91b4fe0137bf
font_01_sfnt_off00008c91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C91 10148 bytes
SHA-256: f40e6e92d58f9b566d75d06c0a2e91c34bbe8fb11d070f705ea4b7c4cfd329c5

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