Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a18ca31c791d184…

MALICIOUS

PDF

44.8 KB Created: 2020-08-24 04:02:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 310b210fccc80003ac1a23230e30ea11 SHA-1: 87c906cc6cd61fd4986709e968a48d3e503ecc8c SHA-256: 5a18ca31c791d18471479bfee7a5dd4a818713db173b2d4bb454b51bef09a400
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body and embedded links also indicate a lure for a 'dictionary apk free', which is likely a pretext to get the user to click the malicious link. The PDF also contains a link farm heuristic, suggesting it's part of a larger SEO poisoning effort to distribute malicious content.

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.com/pify?keyword=merriam+webster+unabridged+dictionary+apk+free In PDF document text
    • http://jemilu.lightonthedesert.org/uploads/1/3/2/7/132712116/fovorekumo.pdfIn PDF document text
    • http://files.pabloguarda.com/uploads/1/3/2/8/132814166/a622d9ab02e4ac.pdfIn PDF document text
    • http://mekofot.tomfoolerytoys.com/uploads/1/3/1/4/131482853/jixusidasim_burodusata.pdfIn PDF document text
    • http://gomab.homeloverswallcovering.com/uploads/1/3/0/7/130738732/nakevewozo.pdfIn PDF document text
    • http://files.palutabulations.com/uploads/1/3/1/1/131164321/56e586cddb2956.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/1/0435/8848/5288/files/moultrie_game_camera_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3273/1038/files/tazogazasiloredujowume.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5763/5735/files/13696442557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7875/2158/files/93690067858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5366/2883/files/agua_de_beber_bb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7152/7319/files/70069832072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3669/6999/files/16692028787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5513/7447/files/babolevapuruwevik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/83366276517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7738/5892/files/tekomiwosidemeto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6974/4028/files/36585718381.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 4

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_off00006640.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6640 5844 bytes
SHA-256: db952466b3edd6d0cac80ee90ca1341803b33d6dc1ea29fb7929970c8b182215
font_01_sfnt_off00007a2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A2D 14124 bytes
SHA-256: ccfdfb3ba6603884c01c6dc54ba57447fd67ab2452792d90660be6edd86589ae

Open this report in the interactive analyzer, or submit your own file for analysis.