Malicious PDF — malware analysis report

Static analysis result for SHA-256 a959a591be5f2657…

MALICIOUS

PDF

41.0 KB Created: 2020-08-05 16:53:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 64f7068587b10f625a8ca586ad5e7654 SHA-1: 2cec10c2145337d34bef31d96fb17a7a165d6107 SHA-256: a959a591be5f265782fd6e28022102bce688434a631713a0e7e801b159ac210a
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Autocad pdf printer missing' and a URL that appears to be part of a link farm designed to attract search engine traffic. The presence of a malicious redirector and a large number of external links strongly suggests a phishing or malware distribution attempt.

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=autocad+pdf+printer+missing In PDF document text
    • http://files.cosmexmelbourne.com/uploads/1/3/0/7/130738639/2479512.pdfIn PDF document text
    • http://files.northgatepfc.com/uploads/1/3/1/8/131856877/nufopidadoxi.pdfIn PDF document text
    • http://files.annishealinggarden.com.au/uploads/1/3/0/9/130969097/71fba17bf5ed6.pdfIn PDF document text
    • http://files.kitchendesigncentersr.com/uploads/1/3/0/7/130739480/xirul-gebepiwul-vopusofef-tobuluborasufi.pdfIn PDF document text
    • http://files.lepinkandco.com/uploads/1/3/2/8/132814166/desuviwisu.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/1/0428/8462/8633/files/xuvugovekufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1970/6279/files/46787468815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7234/6526/files/ladija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27360052690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/99176322455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3475/4728/files/90544064610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0857/3085/files/jeppesen_airway_manual_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2885/6487/files/zuzizapepemevokab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7792/7063/files/lelubudipoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0815/4008/files/kizaviruz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/lodewabitemexesejabafax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5166/3012/files/buchungsstze_bungen_mit_vorsteuer_und_umsatzsteuer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5394/0887/files/kasemefowosi.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_off000063bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BF 5432 bytes
SHA-256: 39684b43e96b9f68a41807f0bdd00af01b7ae4bda8ecb925b3c3a3f16fb7cd5d
font_01_sfnt_off00007629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7629 9676 bytes
SHA-256: 0be451da42e6a0d200990ec9e7d4418095954a2658286d66a97f9067a13085d0

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