Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a3dbae0c217efe5…

MALICIOUS

PDF

43.4 KB Created: 2020-08-05 07:54:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3c98de9ed2313f6040f42a38c92adafe SHA-1: 6b553dec7732476045abd24caac62f0810f84bf9 SHA-256: 0a3dbae0c217efe57d9af25a872c6111d54d2b98dad79b42b7b95c58efd8fb87
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a primary redirector identified as malicious. The document body, though partially obfuscated, includes the malicious URL and references a "test de coombs directo pdf", suggesting a lure. The ML classifier strongly indicated maliciousness, and the presence of a redirector link points towards a phishing or SEO spam campaign.

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.ru/pify?keyword=test+de+coombs+directo+pdf In PDF document text
    • http://files.anandayogawithkaren.com.au/uploads/1/3/2/6/132695525/rojejuvulutipowoxef.pdfIn PDF document text
    • http://files.jonathan-schork-studios.com/uploads/1/3/1/4/131409761/ebd299876282e.pdfIn PDF document text
    • http://files.alliancetoendtargeting.org/uploads/1/3/2/6/132696465/dezegebet_nalad_naxagimepitem.pdfIn PDF document text
    • http://files.theopinionatedone.com/uploads/1/3/1/8/131856290/d6b037b2526.pdfIn PDF document text
    • http://files.schoolofwong.com/uploads/1/3/1/4/131453247/2892625.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/1/0431/7141/4173/files/13728737159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2503/8497/files/dudopibepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9079/5941/files/raspberry_pi_remote_gpio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7786/7422/files/27021539134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7512/5923/files/zemivagolox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7678/8117/files/79158953438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8545/4750/files/71677897565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7556/7777/files/34863361266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1236/6229/files/rajamilutowekemepipal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5257/1555/files/pokod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7152/8344/files/48839730420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6151/8231/files/83046082967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1458/5509/files/61644448132.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_off00006ae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE7 5148 bytes
SHA-256: 6c50588009cd5bae417a293153fca41b91f9baeb2a4f3c1a956cca4ac8916870
font_01_sfnt_off00007c49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C49 10512 bytes
SHA-256: 95cffabf54fea7138d23c55fc350f02146813633c2e200f7ca5885392dd84f2b

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