Malicious PDF — malware analysis report

Static analysis result for SHA-256 171e6d37fec2ad3a…

MALICIOUS

PDF

45.0 KB Created: 2020-08-09 23:02:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bd4df412f8496544548eee08ed309dd1 SHA-1: 1e6f4a54d9401568aa5bc4cb506bc7832a77a772 SHA-256: 171e6d37fec2ad3aa9ea36b984ea47e0a568253913eeb3802da1094012b3b4d9
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, disguised as a download for "Archicad training series vol 1 pdf". This is a common lure for phishing or malware distribution. The PDF also contains a link farm with multiple external links, many of which are hosted on Shopify but point to potentially malicious content. The ML classifier strongly indicates maliciousness.

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.ru/pify?keyword=archicad+training+series+vol+1+pdf In PDF document text
    • http://files.lovingstartpreschool.org/uploads/1/3/1/8/131856276/semumepo_bonofeg_jolobekilafunub_ramotatatu.pdfIn PDF document text
    • http://files.cruisencocktails.com/uploads/1/3/2/7/132710627/e22865b29a2df91.pdfIn PDF document text
    • http://zabapejal.bostoneverafter.com/uploads/1/3/1/4/131453540/056e208151d.pdfIn PDF document text
    • http://files.marathondelimd.com/uploads/1/3/1/0/131070576/sanasitigomujel.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/1/0432/1057/1940/files/bjp_candidate_list_2020_maharashtra_election_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4167/5685/files/34400879219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4028/5607/files/23124851387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9847/0552/files/weleworitan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1994/3579/files/ds3_parting_flame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6058/4870/files/brazil_visa_application_form_for_nigeria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6630/2376/files/lefadamupeka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2353/8088/files/97585022459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7610/5893/files/force_and_destiny_core_rulebook.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_off000067ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67CA 5520 bytes
SHA-256: 0db7f88bb077417a74f13d5bf6d19a67c2860ceeae9d9836ea28520a732e9d0a
font_01_sfnt_off00007a9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A9D 14216 bytes
SHA-256: ed236c7c71e5dcddfcc4886a04ba007b4affed65dafeee8983258995ad1d37ac

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