Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f541b7e5a96908f…

MALICIOUS

PDF

42.3 KB Created: 2020-08-13 09:12:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 88996a82055354d32fca6b290e170f92 SHA-1: 9407efb3fe1481de3781606d61bc7978a2ef256d SHA-256: 9f541b7e5a96908fa49dd9b92e11e86ddb0bbfd0b4857f9d6fc3d88156f99906
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm of 30 external PDF links, many of which are hosted on Shopify. One of the primary links, disguised as a document editing lure, redirects to a known malicious domain. This suggests a phishing or scam campaign aiming to redirect users to malicious infrastructure.

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/wb?keyword=editing%20a%20pdf%20document%20in%20adobe%20acrobat%20pro In PDF document text
    • http://files.danbedental.com/uploads/1/3/1/6/131606727/f020c7d.pdfIn PDF document text
    • http://files.willowtreecathotel.co.uk/uploads/1/3/1/3/131381518/vemevipuwozuwuv.pdfIn PDF document text
    • http://files.freyawaterson.com/uploads/1/3/1/4/131453284/1622477.pdfIn PDF document text
    • http://files.benefit.live/uploads/1/3/2/6/132695455/285406.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/1/0433/5940/4191/files/reading_ielts_with_answer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/9188101279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5214/6586/files/wididorotowudukanuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8838/0061/files/ribodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/60093391421.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3630/2750/files/44531743949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5407/8871/files/nuweruwedabugenijini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0921/9492/files/kelosixafofoduwagipav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5093/3155/files/68799811461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0600/9255/files/50851747359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/bonjour_tristesse_deutsch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4992/7327/files/jasinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7462/6470/files/salesforce_certified_administrator_study_guide.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 4

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_off00006884.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6884 5360 bytes
SHA-256: 678eb176ffa3ede00585c639137998cbdc920dfbb783866627d68b6bf98e4f6f
font_01_sfnt_off00007aa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA4 9780 bytes
SHA-256: b59edd93e8d785986dea5e96dd814772bdf520ce955698917ce160b6efb94a35

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