Malicious PDF — malware analysis report

Static analysis result for SHA-256 8802fab57538d949…

MALICIOUS

PDF

40.4 KB Created: 2020-08-02 01:18:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fb4bb2876e5e9defe17a7fe993b42003 SHA-1: 25642e509a3775dd97b7f5e024a0a6e3e352de23 SHA-256: 8802fab57538d9490e1c5dfd82c9ae583f8c6b8a0829de245a757350429ff237
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a primary link identified as a malicious redirector. This redirector points to a URL that appears to be part of an SEO link farm, likely designed to lure victims with a fake free download. The ML classifier strongly indicated maliciousness, and the presence of numerous external PDF links further supports a malicious intent to redirect users to potentially harmful content.

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=m1+garand+disassembly In PDF document text
    • http://files.1stpocoscoutinggroup.com/uploads/1/3/1/1/131164009/kaxebaxeva-karowolek.pdfIn PDF document text
    • http://files.juditvarga.net/uploads/1/3/1/4/131484395/fbe4a5e498ffb2.pdfIn PDF document text
    • http://files.sewchicinteriors.com/uploads/1/3/2/7/132712369/2097340.pdfIn PDF document text
    • http://files.artfine.com/uploads/1/3/0/7/130739779/reremipubumibofu.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/1/0428/9835/8432/files/51994241049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1387/2548/files/91211853543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9504/0924/files/72416138860.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4104/5145/files/wupesevepagubukuruvigexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/5699237929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8566/9279/files/fotarolenaveforoleku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1903/3000/files/zurenivilumarojidapagulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5572/7260/files/vibowuxatujewiwenobowixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7250/4483/files/xofafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5382/5704/files/23830806518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1625/6677/files/jegivutibut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2351/5294/files/50722161181.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1008/8360/files/5663567686.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 6

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_off00005fd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD7 5444 bytes
SHA-256: 31ab11c5b40b43b511b89fd258e9a063920ab9497675300c91b3311c601884bd
font_01_sfnt_off0000725b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x725B 10100 bytes
SHA-256: 4589e9cc3b0fc9c0e550ead8a86ee1a92ba099272bd1b94e73110bc4746977f5

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