Malicious PDF — malware analysis report

Static analysis result for SHA-256 18c900042b70c6d5…

MALICIOUS

PDF

41.0 KB Created: 2020-08-21 07:53:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 585c78a96c564128de60840f87d9cde3 SHA-1: 3275e2e09998a7c11c16ff3bfec6edd12b29408c SHA-256: 18c900042b70c6d551c68d7c24d0e169137e7e025c17aa4592dec37898fa36e9
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, pointing to a phishing lure. The embedded document body text, though corrupted, contains phrases like 'Delivery note excel template' and a URL that redirects to a malicious domain. The presence of numerous PDF links, many pointing to Shopify, suggests an attempt to create a link farm for SEO manipulation, likely to obscure the malicious redirector.

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=delivery+note+excel+template In PDF document text
    • http://files.saveurlifeoutreach.com/uploads/1/3/1/0/131070911/e805218130ac.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/1/0432/9163/9968/files/satin_camisole_pattern.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6579/4969/files/91436341045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0132/3421/files/page_break_inside_avoid_mpdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5594/6655/files/59380566306.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/zaburzenia_psychiczne.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0501/7238/files/56947877940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8198/0321/files/descriptive_research_examples_of_study.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7346/1669/files/scientific_notation_practice_problems_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9198/2491/files/ritoriximomosijiwozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8027/8426/files/rofafurosobatekatixikor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9005/9176/files/17252016054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0733/6867/files/viryual_girl_hd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1577/4108/files/24855412177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0992/3480/files/wozozepufakira.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 3

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_off0000645e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x645E 5128 bytes
SHA-256: 867687a692cc6706f06e0820e4530ea28fb23de64d620bf144fc7e0e0e5b410e
font_01_sfnt_off000075cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75CB 9864 bytes
SHA-256: a3bdc0aefc9d7ec4423e23409a8f3632ade06e3f20ff3a0934a40b808aa17c20

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