Malicious PDF — malware analysis report

Static analysis result for SHA-256 64b1cc398f605796…

MALICIOUS

PDF

45.9 KB Created: 2020-08-03 03:12:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ab7cfc4dc123f248e610649d8d7be3ae SHA-1: 2886b2acb720c16cd08ee85cbdcbca9214603fc5 SHA-256: 64b1cc398f6057961994e3d4a5378e772c6866c8a9e27f5bfa710fa2f85012b0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with one prominently featuring a redirector URL associated with malicious activity. The heuristic firings indicate the PDF is designed as a link farm, likely to distribute malicious content or phish for credentials. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to malicious sites, potentially leveraging JavaScript for obfuscation or further redirection.

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=biconditional+statement+examples In PDF document text
    • http://files.microbesbymarco.com/uploads/1/3/0/7/130775434/lobodojonowalazib.pdfIn PDF document text
    • http://files.killingfieldsterrain.com/uploads/1/3/1/3/131381976/kifawi-niridukexizo-fubavajorapitor.pdfIn PDF document text
    • http://files.applebypropertymanagement.com/uploads/1/3/1/4/131454355/b4b32c97f.pdfIn PDF document text
    • http://files.oldhamcountypolice.com/uploads/1/3/0/8/130814666/6470208.pdfIn PDF document text
    • http://files.iveymission.org/uploads/1/3/0/8/130813821/46f98d03eaa1.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/1/0430/5249/9098/files/pipovawitoroba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3366/4408/files/74488336168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9227/1519/files/tekimesoduvadutof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5173/5448/files/sipubedefujuberawozuwubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/2718501981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vebamuwonodivori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0945/6803/files/tutowuminozitafex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2665/3090/files/tuwuvux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78046530146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3502/5831/files/40487481871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9502/4033/files/60864231117.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_off00006c3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C3D 5240 bytes
SHA-256: 1526f1c4da52a47d1f792bfb074e2951fe383613578814f0bdf05156a2eb7f23
font_01_sfnt_off00007e05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E05 14488 bytes
SHA-256: 1685abf7e64c439f00384b505032fac1e30f3a7ad1949437b9d19b0eae01eebc

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