Malicious PDF — malware analysis report

Static analysis result for SHA-256 43572498a2c10f17…

MALICIOUS

PDF

60.3 KB Created: 2020-08-21 20:48:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ab6f7924b19cece2fd4d55ad9371c70 SHA-1: c439bc526552b0b150eced00605eba153841abe2 SHA-256: 43572498a2c10f171a508d470e8f2039ffa0a890d500ae1a838a66a047b5402f
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=bacillus+licheniformis+infection'. Another critical heuristic indicated a PDF link farm, with many links pointing to Shopify domains, but the primary redirector is the most concerning IOC. The document body contains garbled text and what appears to be metadata, but no clear user-facing lure.

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=bacillus+licheniformis+infection In PDF document text
    • http://files.thegeorgiaruthhouse.com/uploads/1/3/1/4/131438228/wakebuv-jujeze-vipat.pdfIn PDF document text
    • http://magazo.jvcai.org/uploads/1/3/1/4/131438500/f948f638.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/1/0437/7994/8695/files/malicious_movie_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/6862/8630/files/97541287283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2004/9822/files/lokobeziva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6019/8557/files/44106771457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2250/0518/files/tufosedujabajebuvesumetif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1269/9798/files/mejiwosipon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2908/6876/files/score_hero_hack_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5511/1589/files/bizutefudolokazoparo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/wesum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6374/5441/files/66187574345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0623/8626/files/biblia_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8344/7966/files/36528570172.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_off0000acc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACC1 5172 bytes
SHA-256: 86f36ef236b4acd970fd312765bf8c70b7de610422dc324158967f4b54d4e3bd
font_01_sfnt_off0000be1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE1B 11860 bytes
SHA-256: ea54a41dfd0a8acd05fd9ea65c6cfa1d3bf87bee2157fec589e091f6c252a9f6

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