Malicious PDF — malware analysis report

Static analysis result for SHA-256 db2400a9cb8c313c…

MALICIOUS

PDF

43.5 KB Created: 2020-08-23 20:06:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b7602b0e3cc5a4e8f0f16155fa775ffc SHA-1: 04cc199d4fc23959d96261c9984e51ffbd2e5875 SHA-256: db2400a9cb8c313c86c6809e073c76a390e3475fa38864d108c015def4ab8742
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body text, though partially corrupted, contains the phrase 'Comparable crossword answer' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of multiple embedded links and the malicious redirector indicates a link farm or SEO poisoning attack designed to drive traffic to malicious sites.

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=comparable+crossword+answer In PDF document text
    • http://sazajek.beingasunflower.org/uploads/1/3/1/8/131856935/d6d43d3c8.pdfIn PDF document text
    • http://gemepif.580mercantile.net/uploads/1/3/0/7/130739113/goruzisewozeluk-telinamupukufi-lezup-sofuxekixapodaf.pdfIn PDF document text
    • http://files.micahmcgivern.com/uploads/1/3/2/6/132681144/zixolekarane.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/1/0437/7526/2869/files/piwag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3621/1362/files/yearly_calendar_template_one_page.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9914/2810/files/bepolivik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4320/4765/files/memorex_cd_lablemaker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4162/7029/files/54258125391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4852/5208/files/jofomobiwepumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1149/files/a_song_of_ice_and_fire_rpg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4255/9384/files/risosovitajobuwifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0352/5794/files/april_2020_current_affairs_bankers_adda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0415/8364/files/mutazikofuvozisaxub.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C65 5356 bytes
SHA-256: 7f919e54d3a9ac9accbf1a7dbf0296470148b72e6a764f1bbfb86a2204735035
font_01_sfnt_off00007e80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E80 10340 bytes
SHA-256: ad83c016f6bc8dc6eaa115c94296090b9dc4a9e0b3ed7b8e6d4d257632cde8be