Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3943600235440a4…

MALICIOUS

PDF

40.3 KB Created: 2020-08-18 13:49:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f9258bc3e4c2d93ebdc33b8bc2144ac4 SHA-1: ccbc5ff3923b51126d85d8b05dabc20dcea6fadf SHA-256: c3943600235440a46d71269f02b1cc46841e8f2e52231787e81a8333683a1e0b
202 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is presented with a keyword related to downloading software. This indicates a phishing or scam attempt to trick users into visiting malicious infrastructure. No scripts were extracted from this sample.

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=canon+camera+connect+apk+for+macbook+pro In PDF document text
    • http://files.thecheckupapp.com/uploads/1/3/2/7/132740278/5f0ed1.pdfIn PDF document text
    • http://files.pilatesante.com/uploads/1/3/1/3/131383942/konokuvivomekasod.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/1/0432/5244/9444/files/sukunofunoverakumizabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8814/9668/files/schema_complementi_analisi_logica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/kukogemuteronizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5107/3174/files/75840388029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1093/3414/files/40099098853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6181/3152/files/koxokotudofefiwoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4591/1709/files/48380228581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6065/0393/files/brutal_black_dragon_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7686/1606/files/33494764294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8065/5775/files/29055571591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1708/3803/files/bokevodozoritu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/6079562627.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 3

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_off0000603e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x603E 5060 bytes
SHA-256: 527bfe8ac9d3879cb5026eb70a67c1ad9174f3509f6b51245a240e42ab3737cc
font_01_sfnt_off00007161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7161 10196 bytes
SHA-256: f84ee766234a7a814fa1d9f4204c2d648c94dc315b69ce3bc1eb2a12d9133da3

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