Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7f6c98732be817e…

MALICIOUS

PDF

41.7 KB Created: 2020-08-20 18:22:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3d35422ef5a650728037d69ea032aecc SHA-1: a40a5d22c9475c4d28a5026f0e81b11a7c364fe1 SHA-256: f7f6c98732be817e5fb8b0eb48413dfaa7b792932477a57952f05e9dd97e76f6
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the critical PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The primary malicious URL is https://ttraff.cc/pify?keyword=core+java+programming+questions+and+answers+pdf, which is likely used to deliver a secondary payload or phish for credentials. The document body, though heavily obfuscated, contains references to the Java programming topic and the malicious redirector URL, reinforcing the lure.

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=core+java+programming+questions+and+answers+pdf In PDF document text
    • http://files.ambrosescholars.org/uploads/1/3/1/4/131408942/benavawanezid_pujobulemivofo_sonefabosipete_dasonisaviri.pdfIn PDF document text
    • http://vivoku.sunkissedcondos.com/uploads/1/3/1/4/131453984/sesisinup.pdfIn PDF document text
    • http://files.alebml.com/uploads/1/3/0/7/130739239/3594939.pdfIn PDF document text
    • http://luvev.theempowermentperspective.com/uploads/1/3/1/8/131871721/4696459.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/1/0433/8103/1064/files/nukujudusaravipezanemix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3840/7845/files/7781451984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/girodakivabegemopewuvaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7302/7749/files/raromedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1283/2932/files/53867111915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1683/0632/files/85542373144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0346/0259/files/simizujupetonezukigosidip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0812/3303/files/bimijitupaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/wumapofuwesomobeperiguvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8667/5109/files/astronomy_wikipedia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1283/9845/files/xogowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9499/0231/files/93870583064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0960/5791/files/giving_directions_grade_1_worksheet.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_off0000633d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633D 5588 bytes
SHA-256: 788b9f56eac4359f696443675cf03f3427c28a9dba853fc3342bf6a8500aadac
font_01_sfnt_off0000763c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x763C 10248 bytes
SHA-256: a7575889823061481c7defe33fb81004b9d32b34392f4410443676b2f7a62137

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