Malicious PDF — malware analysis report

Static analysis result for SHA-256 86da31ddd0718212…

MALICIOUS

PDF

41.1 KB Created: 2020-08-14 19:03:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eba9172aae7fdd89a39f0ab69d862fc8 SHA-1: 9f9931c071d2a5d9098b726d6f5c257af2df6180 SHA-256: 86da31ddd07182121e77c52c97f5f87cf13695531869f4cf84b40a2c7a0cdd91
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with one prominently redirecting to a known malicious domain (ttraff.com). This suggests a phishing or scam attempt, likely disguised as a free download to entice users. The ML classifier strongly supports the malicious verdict, and the presence of a redirector link is a high-confidence indicator of malicious intent.

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=clear+acrylic+perspex+sheet+perth In PDF document text
    • http://files.fasttrack.cognitiveguidance.us/uploads/1/3/2/6/132681634/6eed9cde5ab7a.pdfIn PDF document text
    • http://files.puttdoctor.com/uploads/1/3/0/8/130873996/xuwokunapuzatij.pdfIn PDF document text
    • http://wenidunus.haikutokyo.com/uploads/1/3/2/6/132682076/pupikemaboja_rawasulofifoj_fizesudizu_munawazamin.pdfIn PDF document text
    • http://kapij.cardiganbayregatta.co.uk/uploads/1/3/1/4/131438096/cdc3b3557212d66.pdfIn PDF document text
    • http://jipivap.ryansbill.com/uploads/1/3/1/0/131070313/doloxuguxujapo_lupimamejusera_jajubumeg_maxegipijofov.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/1/0428/7217/6799/files/soditavumekuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/dezogirajononikijoledot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0737/6546/files/minecraft_has_run_out_of_memory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9427/8293/files/19124130238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8786/9592/files/wipewuzeluvelufedikimexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/rubufiniluvenu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4895/1194/files/64539665063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6200/1821/files/59401981376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3136/2725/files/47464733285.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 7

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_off000061fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61FD 5096 bytes
SHA-256: 63f1b40a3293ca458229bee2bc726965366c6de0a93863abfefcb8d6b4b0806d
font_01_sfnt_off00007357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7357 10560 bytes
SHA-256: f09eae940a1be6cfd49882065fd1d94969d0da72b7314be8e53bef6ad47f0279

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