Malicious PDF — malware analysis report

Static analysis result for SHA-256 12372aec5a96a46a…

MALICIOUS

PDF

34.8 KB Created: 2020-08-14 08:47:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8dc0197574c93da6ae81c932aa6d5992 SHA-1: a580036922fef620e064828308c76ae4d639c860 SHA-256: 12372aec5a96a46a35b87a2c09b5265e7a626a8ec525066b269e71601c3675a2
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to a redirector service, indicating a link farm or phishing attempt. The document body text, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=bonk.+io+hacks', which is flagged as a malicious redirector. The presence of numerous external links, including 15 PDF links, strongly suggests an SEO manipulation or phishing 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=bonk.+io+hacks In PDF document text
    • http://files.allsaintscresson.org/uploads/1/3/2/7/132741241/215ab08fb9e6c.pdfIn PDF document text
    • http://files.biblestudylife.com/uploads/1/3/0/9/130969790/3111149.pdfIn PDF document text
    • http://vivej.stelizabethrap.com/uploads/1/3/0/7/130775639/cfecf12fe7d01a.pdfIn PDF document text
    • http://files.got-hope.org/uploads/1/3/1/3/131384171/wuxebuv-matavuno-buxaz-jinixam.pdfIn PDF document text
    • http://files.chlaudit.com/uploads/1/3/1/4/131437474/lugodelax-rawolobusore-rusinonolemumev-vonaforu.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/1/0430/8307/1650/files/radademiwatapaxalupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8096/4509/files/arizona_ccw_permit_application.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/3081/8461/files/williams_hematology_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0475/5096/files/vomurusem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0279/0039/files/zokukotobavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0576/2974/files/revolamewedu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/56405041525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1335/7214/files/a_level_biology_past_papers_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1651/0873/files/zemifabowalolugedi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4512/1182/files/bowditch_traverse_adjustment.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 7

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_off00004c17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C17 4904 bytes
SHA-256: 200d50c23eff2db3509723d8ef53575da6eb7960b4b9a7d380e891f0194ddedb
font_01_sfnt_off00005cc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC0 9976 bytes
SHA-256: bd3536cc3ff7a8f724b21e2a12f741bd26ebe5a55979299b3e85990e1e921f06

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