Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2b57c449edf26c1…

MALICIOUS

PDF

39.8 KB Created: 2020-08-26 10:40:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: abd903a585edece0caece4f7d906c086 SHA-1: 9ac1a589415f9363edc1874aaf040d74d2c8e77a SHA-256: a2b57c449edf26c1b322c8dcd1cd0ba5d908ecb24264c96a120d138afabe6476
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with at least one pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body contains garbled text and a URL that appears to be the primary lure, suggesting a phishing or redirection attempt.

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.ru/pify?keyword=skyrim+dodge+roll In PDF document text
    • http://kativeval.bodyvolvefitness.com/uploads/1/3/2/6/132695465/254406.pdfIn PDF document text
    • http://bexude.warlarp.com/uploads/1/3/1/6/131606490/fubisedaxi.pdfIn PDF document text
    • http://files.michisboutique.com/uploads/1/3/1/4/131483002/6587822.pdfIn PDF document text
    • http://files.corydixon.com/uploads/1/3/2/7/132740665/nazupebipawava-dabusomewus-senokuferujo-poliwuz.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/1/0434/6321/3209/files/cinema_4d_free_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/90292645332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8581/5205/files/87596353772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7233/1675/files/acls_book_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9824/7069/files/what_is_insurable_risk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7790/3263/files/wuvamipurow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0300/9434/files/buvijanomawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5340/7646/files/vokobapomumubasewonudok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9608/8481/files/air_on_a_g_string_piano_sheet_music.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 5

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_off00005703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5703 5024 bytes
SHA-256: d2548094efb27f2cba754a23179f8961506d3f0d06f57cf7ead3d9e69c1c3b62
font_01_sfnt_off0000680f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x680F 13916 bytes
SHA-256: f377fff9670c5a9922d46d7d3989eb3491143fbaa405005589c7b17c29cdd94a

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