Malicious PDF — malware analysis report

Static analysis result for SHA-256 99d73084b8047948…

MALICIOUS

PDF

57.4 KB Created: 2020-08-05 02:46:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 52ccdf626516711ffa785ca31e80f33f SHA-1: f0ea625acb4cb56425422b5e20389dfcbfa1aea6 SHA-256: 99d73084b80479488acaae5a5489a6b502bd823deead499ee3e70880b72d83d5
194 Risk Score

Malware Insights

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

The PDF contains a high 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, includes the phrase 'atomic structure questions pdf download' and the malicious URL, suggesting a lure to trick users into downloading further malicious content. The presence of a malicious redirector indicates an attempt to obscure the final destination of the payload.

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=atomic+structure+questions+pdf+download In PDF document text
    • http://files.husbandshistory.com/uploads/1/3/1/6/131637177/darunutowovejutazo.pdfIn PDF document text
    • http://files.ironbridge-analytics.com/uploads/1/3/1/6/131606563/bodolexivedazaxubegu.pdfIn PDF document text
    • http://files.waioratrust.com/uploads/1/3/1/8/131856476/3778717.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/1/0427/3196/2535/files/12226197943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tevegijetowid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9386/1279/files/cet_to_gmt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/8442439475.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/sewowogo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7310/1214/files/19535967605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0644/1110/files/27733558297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7400/2837/files/lexizigosefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/gebejugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0348/5092/files/75842376108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6825/2565/files/17980919647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/nasegilozasil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51507598499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/guvub.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 5

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_off00009357.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9357 5508 bytes
SHA-256: 9933fa23f70f30b37056fa870c9196b0f618a4236997f3407b3969c932a220de
font_01_sfnt_off0000a60f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA60F 16548 bytes
SHA-256: 42732f89ae63da534537fead1442113f6aee86fc20201ee99efebf23a960635b

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