Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8886825b832ae79…

MALICIOUS

PDF

59.9 KB Created: 2020-07-29 13:04:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0d207197fbedfb8f94180f158255d629 SHA-1: 528175d56e44700f1e6cd153248425c893f042ba SHA-256: b8886825b832ae79d1b4ce120cd5f6611ff15efff52d6458d69b3e17134d2353
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The document body appears to be obfuscated or corrupted, preventing a clear understanding of its lure, but the presence of a malicious redirector and a link farm suggests an attempt to lead the user to a harmful site.

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=autogenic+relaxation+pdf In PDF document text
    • http://files.angelabain.com/uploads/1/3/0/7/130776499/karupotuduzipogug.pdfIn PDF document text
    • http://files.presprimaryclonmel.com/uploads/1/3/1/4/131453226/xepixuxodilumit-guniwemo-pupelaru.pdfIn PDF document text
    • http://files.trentonbadillophotography.com/uploads/1/3/1/1/131164472/fd2af4.pdfIn PDF document text
    • http://files.viviennesjoy.org/uploads/1/3/1/4/131453060/3987578.pdfIn PDF document text
    • http://files.georgisztojanov.com/uploads/1/3/0/8/130814308/tuvipe_bepobolepezigi_jilafosatoj.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/1/0437/8099/7269/files/jaralap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4447/0933/files/753635147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/58919551370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0989/9670/files/nulovexasozoradat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5720/9766/files/17017346495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6134/6466/files/niterilanisemetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7841/8583/files/sosemujixokelop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1592/8997/files/88659384800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ziwodukujaluladiludu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/lugerup.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9348 8380 bytes
SHA-256: d123050b4f0a95dee2a564eab571af15d1088646404c2639d80f4a705531154c
font_01_sfnt_off0000aefa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEFA 5084 bytes
SHA-256: 6ef1b5c0cdc1beb342724750cecc029ed6fafbdaa52c9624173caecbed89fb45
font_02_sfnt_off0000c053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC053 9956 bytes
SHA-256: 47d8756850be33fef6e6299b47c5d62bc9956e3e739a7a293eaaf2fddd743578

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