Malicious PDF — malware analysis report

Static analysis result for SHA-256 56337bce13d17314…

MALICIOUS

PDF

51.8 KB Created: 2020-08-08 02:13:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9ced59a7c92466eeef31671d6a06d285 SHA-1: fcbfaad9c65ba38d1efd9cd1eed9aa10d3f667f7 SHA-256: 56337bce13d17314c949d697ec43bf152096eaed4cc5317a70ce75c739655af5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links that redirect to a known malicious domain, ttraff.com. The document body, though heavily obfuscated, contains references to 'circle theorems pdf worksheet' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous external PDF links, many pointing to Shopify, further indicates a link farm or SEO manipulation tactic to drive traffic to malicious content.

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=circle+theorems+pdf+worksheet In PDF document text
    • http://files.shrewdtrading.com/uploads/1/3/0/7/130776536/2008919.pdfIn PDF document text
    • http://files.paulsfranchiseleague.com/uploads/1/3/1/4/131438249/kabuvoxije_kuvorenuzixuw_raxejusub.pdfIn PDF document text
    • http://files.thewomenslockerroomfoundation.org/uploads/1/3/0/7/130738806/1329716.pdfIn PDF document text
    • http://files.bellacalore.com/uploads/1/3/0/8/130814279/mumubimogamu-fupedevumebat-ropetiwajo.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/1/0429/0733/6867/files/57353305741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6027/4087/files/90918030380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0496/0676/files/14147297433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6582/7747/files/natalie_portman_rap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7881/8715/files/kimekafexes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5086/8646/files/guval.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3532/8663/files/45360364014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5016/2581/files/tubovumokijopaduje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4267/6648/files/43120876262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2525/3023/files/25327595392.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_off000084ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84EF 5248 bytes
SHA-256: 3858d540190bb40bc5679344b53d5b6f5445e3fa239886923087d50f4c2189f6
font_01_sfnt_off000096af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96AF 14032 bytes
SHA-256: 219d92b1771479ec2de08b68fc043993c34b659381ad23b5503f5385490bfb2a

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