Malicious PDF — malware analysis report

Static analysis result for SHA-256 113d1b46c115a335…

MALICIOUS

PDF

46.2 KB Created: 2020-07-30 16:03:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86b313e5e0c0493cbb3e6c3f31e63cb3 SHA-1: 7cd7437e5dbb14603e0743b3ae60149005676191 SHA-256: 113d1b46c115a335a341ac9f926024826c2d1379cb7603f662419023f2b1bf16
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to redirector infrastructure, specifically identified as a malicious redirector and an SEO link farm. The document body, though heavily obfuscated, suggests a lure related to modifying PDF files. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent, likely to direct users to malicious sites for phishing or malware distribution.

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=apporter+des+modification+sur+un+fichier+pdf In PDF document text
    • http://files.team-mc-fishing.com/uploads/1/3/0/8/130814831/512f811c3.pdfIn PDF document text
    • http://files.firetrailers.com/uploads/1/3/1/3/131380687/vabej-zorasuponoze.pdfIn PDF document text
    • http://files.ecosystemarts.org/uploads/1/3/1/4/131412603/8131fa9.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/1/0432/9845/5705/files/pefitejuvoworekor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2457/9736/files/46775664891.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1814/9285/files/xefowuzexizisosuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3167/3502/files/sowivumixop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/6397221525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4694/5436/files/sobedokubozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/gabemesib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/zuvotibuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3862/9270/files/97741866595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/mujufifo.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_off0000743b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x743B 5236 bytes
SHA-256: 832c2fdd7f7f0685397bad8e42b409fcca003ec92484658edd2ba438a7b3a71d
font_01_sfnt_off000085d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85D3 11332 bytes
SHA-256: f69bb266a81b0783ff784be8c5f7499056a7e97d9f8e488a700de33daf1fff38

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