Malicious PDF — malware analysis report

Static analysis result for SHA-256 b848109647f79033…

MALICIOUS

PDF

36.3 KB Created: 2020-08-22 00:33:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bf587f695ea0361f8ebc0f8a25dc6e39 SHA-1: 7c63ec5380be9b396bc76e8afbaaa38f1a9c769a SHA-256: b848109647f7903345ff981fba3c3f11d29efeea87aa5fb9fbc34997605aee22
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to external PDF files hosted on various domains, which is indicative of a link farm. One of the primary links, 'https://ttraff.cc/pify?keyword=bytecode+information+technologies', is flagged as a malicious redirector. This suggests the document's purpose is to lure users into clicking through these links, potentially leading to phishing sites or malware downloads. No scripts were extracted, but the PDF structure and URL analysis strongly indicate a malicious redirection attack.

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.cc/pify?keyword=bytecode+information+technologies In PDF document text
    • http://files.pilotmissionarybaptistchurch.org/uploads/1/3/1/3/131381614/3924811.pdfIn PDF document text
    • http://jetiz.advancedbenefitscorp.com/uploads/1/3/1/3/131380600/puvowelat.pdfIn PDF document text
    • http://files.villa-daniela-brela.com/uploads/1/3/1/3/131380845/8755471.pdfIn PDF document text
    • http://fexejixax.maldonarchive.com/uploads/1/3/1/3/131382486/2644ab28.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8849/4236/files/38_latin_stories_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7058/7029/files/kemeverugapofetal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0885/1098/files/pototetoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2190/9662/files/rs3_firemaking_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9092/8026/files/podujumerav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6569/4613/files/tulaguzidadigira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7895/0810/files/66110288385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/2463/3243/files/how_to_make_minecraft_shield.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1216/1685/files/water_aerobics_certification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7709/9935/files/nafelemozavejav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8643/8807/files/fasewez.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000043ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43BA 5372 bytes
SHA-256: 71eed1935db9081be56e2710d6b23465e9f49964d3c4e9dd579ce12f394e1707
font_01_sfnt_off000055ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55CE 9492 bytes
SHA-256: 08d890803c12dab306b123f4d2ba057c2317c67b225752f0c90a683a8779b834
font_02_sfnt_off0000762a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x762A 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f