Malicious PDF — malware analysis report

Static analysis result for SHA-256 355ef645c0ac4dad…

MALICIOUS

PDF

45.7 KB Created: 2020-08-10 16:30:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 83567f47c6c74ac268630a21662f61e8 SHA-1: f3c165b7ff1b85e4bf436e38b9ed371435dd263e SHA-256: 355ef645c0ac4dadccf40e32cedfea1452f6b634d6b5f5ef89d995485fb6d119
194 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 'https://ttraff.com/pify?keyword=developing+writing+skills+pdf'. This indicates the document's primary purpose is to redirect the user to malicious infrastructure. The PDF also contains a mass external link farm, with many links pointing to Shopify, suggesting an attempt to obscure the malicious redirector or leverage benign hosting for part of the chain. No scripts were extracted from this sample.

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.com/pify?keyword=developing+writing+skills+pdf In PDF document text
    • http://fovufija.mindandbodyfitnessaus.com/uploads/1/3/2/8/132816066/sesum.pdfIn PDF document text
    • http://files.davidstaniforth.co.uk/uploads/1/3/0/7/130776409/8910665.pdfIn PDF document text
    • http://files.tkeylocksmiths.co.uk/uploads/1/3/2/7/132740275/pabufuvanoj-mulapa-lulore-mitorefibalexa.pdfIn PDF document text
    • http://fasuvonu.reallifesigns.com/uploads/1/3/0/8/130874197/vadamaku-busidatukiri-jijuninizev.pdfIn PDF document text
    • http://files.rina-bansuri.com/uploads/1/3/1/3/131384771/juwowevuzos-xujirasibuwil.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/1/0431/1659/3312/files/57996936579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/pay_verizon_bill_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/zorotuxogubokeben.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niroduwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7240/5157/files/nigupixibifivapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1759/1189/files/47597068255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8550/3393/files/piccolo_trumpet_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6175/5547/files/xariputadatuseradixeta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/bujomewudedatagob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9912/7957/files/38374348257.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 7

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_off000068b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B9 5004 bytes
SHA-256: 27c074f545b6abf5afc232e19d96c41d6b71bbcb4b58802c12ab2d422d4be339
font_01_sfnt_off000079e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79E7 9868 bytes
SHA-256: d7dbb15f53342eec8ebc80d723c0272ea08cae8c4dc02a3f433cd0ffc0f9dd18
font_02_sfnt_off00009bac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BAC 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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