Malicious PDF — malware analysis report

Static analysis result for SHA-256 12e6bc564ae5112c…

MALICIOUS

PDF

42.5 KB Created: 2020-08-18 12:55:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dfd85ecd55620bcb4c9e970058f2f339 SHA-1: 97605b8c7ded78f7d370fd3e71dad6c5005256ec SHA-256: 12e6bc564ae5112cab60e795b139ed6af2297d639bfc1322c341a49696795dfd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple embedded links and a document body that attempts to disguise itself as a free download for 'English writing skills'. These links, particularly the one to 'ttraff.cc', are identified as malicious redirectors. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or scam attempt leveraging SEO tactics to distribute 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.cc/pify?keyword=english+writing+skills+pdf+ssc In PDF document text
    • http://files.gmhpn.org/uploads/1/3/0/7/130775249/mokewifebak.pdfIn PDF document text
    • http://sebad.hfglacrosse.com/uploads/1/3/2/7/132740580/3d3ef121e606b5.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/1/0430/1537/2953/files/4180213887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3041/2454/files/voxubapuxizinarixigexap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9608/8481/files/importance_of_evapotranspiration.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3973/6487/files/83531290632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2070/6204/files/spanish_food_pyramid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2469/4939/files/80030763651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6775/8999/files/the_way_i_are._mp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7022/5574/files/97493640362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0808/9509/files/waloxotazebujofamobimebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7764/0092/files/taximitum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7513/2824/files/56257551170.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 2

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_off000066fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66FE 5320 bytes
SHA-256: c4ea52a3b491a2dbfa243d77d3428b384393e4759d6da8d8a5277125ef178206
font_01_sfnt_off00007921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7921 10532 bytes
SHA-256: e3d4ede0fb3e0ab9f3abc8a390e03cd476661d47c464a07393823d3508cba5be

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