Malicious PDF — malware analysis report

Static analysis result for SHA-256 789b2a29f9b3592a…

MALICIOUS

PDF

42.9 KB Created: 2020-08-11 18:13:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 054d003dd3a070297561de574672d2bf SHA-1: 30928b72a5ce5e583ca5b9def87edece3c5358f7 SHA-256: 789b2a29f9b3592ad43a35f6dcf7a7ddbad9d5ed3e0dba21e618c98af73a3c4b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to appear as legitimate documents but redirect to a malicious domain, likely for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the presence of a redirector URL confirms a malicious intent to lead the user to a harmful site.

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=teaching+characterization+pdf In PDF document text
    • http://files.eaplab.eu/uploads/1/3/0/7/130740127/2255032.pdfIn PDF document text
    • http://files.catholiclaporte.org/uploads/1/3/1/3/131379443/6724304.pdfIn PDF document text
    • http://files.makatontrainer.com/uploads/1/3/0/7/130776644/311f11f37d5e.pdfIn PDF document text
    • http://zisip.pulse-studios.co.uk/uploads/1/3/1/6/131606490/3472429.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/1/0437/6700/5333/files/banking_chronicle_puzzle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/vajelagodelagi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2838/0839/files/kodiboruvofimupamumawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8163/8812/files/green_belt_training.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9353/9478/files/logapokepilakez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6874/9979/files/98396883882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2200/8988/files/annotate_secured.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0250/2048/files/tangled_i_see_the_light_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4954/1013/files/ethnic_conflicts_in_pakistan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5046/6454/files/wejonom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9431/7981/files/34491697925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/37754786114.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_off00006aa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA4 5204 bytes
SHA-256: 078a739d9c5ae9d7cec9241d0cd1521f33cf48d8e6169f9bf96f10ec80411bba
font_01_sfnt_off00007c57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C57 10120 bytes
SHA-256: abbf7e3713ce55094510387a244a9792903c70f18bae5242b30883572976ce7c

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