Malicious PDF — malware analysis report

Static analysis result for SHA-256 f90796467db42d46…

MALICIOUS

PDF

44.6 KB Created: 2020-08-21 23:44:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd95a9516a8a1c79b9fd2d6c6ab18e49 SHA-1: 1c9a514510991356e757db7f4d52dc715e648f53 SHA-256: f90796467db42d466a6fd54a667a77bdff4703db7790fd25218f4cea4ee8fb93
202 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a download button, aiming to trick users into clicking it. The document body, though heavily obfuscated, contains the target URL and references to accountancy books, suggesting a lure. Multiple links to external PDFs were found, with one pointing to a known malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=class+xii+accountancy+book+pdf In PDF document text
    • http://files.bobbebold.com/uploads/1/3/1/8/131856071/totebelivu-ladititi.pdfIn PDF document text
    • http://kenoba.nexussmarthome.com/uploads/1/3/2/8/132814930/tufobetasupexageb.pdfIn PDF document text
    • http://kogunude.heirloomtattoo.com/uploads/1/3/1/6/131606122/bokawibevopomat-dirijexivaseba-kimokin.pdfIn PDF document text
    • http://fipoxigiw.getinvolvedbeaverhead.org/uploads/1/3/2/8/132814930/3e5184.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/1/0428/6332/9446/files/wumidixek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7666/2949/files/gediwufedilog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7211/9199/files/41887360158.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1561/7182/files/20186633458.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2450/6266/files/labotid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0008/4126/files/adenose_esclerosante.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8491/3565/files/dinulano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2430/8630/files/16287337289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8156/3298/files/yellowstone_camping_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2541/5843/files/isc_class_11_biology_syllabus.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 2

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_off00006293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6293 5212 bytes
SHA-256: 46a687c8a28e7d846fef7a0308fed1ff699eb59193f7d72e0d238b9706009fa2
font_01_sfnt_off00007460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7460 10236 bytes
SHA-256: 38124b58b94c19783368a439f9f764cbd672d219883779e64ffd90280ec437a3
font_02_sfnt_off00009773.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9773 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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