Malicious PDF — malware analysis report

Static analysis result for SHA-256 852b4acb5e4d1f0d…

MALICIOUS

PDF

55.1 KB Created: 2020-08-07 09:01:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a2a3b584bdac0ba0ab058c2ef4ea9161 SHA-1: 6b8b6c12aa7b3c7977f6a6cf5c414d36ded1bf04 SHA-256: 852b4acb5e4d1f0d983b3eaa58f512cc05f0ca35a4bfdaca540f48e8a972c00c
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, including a critical redirector link to 'ttraff.com'. This, combined with the 'PDF_SEO_LINK_FARM' heuristic, indicates a likely attempt to direct users to malicious or phishing content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the document's structure and embedded links suggest it's part of a phishing or malware distribution chain.

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=arthur+conan+doyle+as+aventuras+de+sherlock+holmes+pdf In PDF document text
    • http://files.decadesvintage.co.uk/uploads/1/3/1/6/131606035/9107723.pdfIn PDF document text
    • http://files.northstarelite.org/uploads/1/3/0/7/130775598/refetajovefamavub.pdfIn PDF document text
    • http://files.oneined.com/uploads/1/3/1/0/131069898/gejose_donemadas_zorovawufirito.pdfIn PDF document text
    • http://files.truckelele.com/uploads/1/3/1/4/131452904/16b6ab8cd29.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6402/5493/files/daluzubona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pegumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7763/2154/files/26901684036.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7208/5406/files/7283871174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0868/6237/files/list_of_aluminum_alloys_and_properties.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9973/2635/files/59910107001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7748/4196/files/python_nested_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4029/1486/files/27386502768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2821/0073/files/62181198040.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2910/0701/files/39255331349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5897/0280/files/supiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8106/2805/files/92566436288.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B74 5444 bytes
SHA-256: 733fe082241dd0435776449b1385e8303ad0611b354b47a290042c365f6e7dd4
font_01_sfnt_off00009dd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DD7 10224 bytes
SHA-256: 6549d75e30da6e0588892dacaf888d626321fce75e1fdfacc8c218693898d074
font_02_sfnt_off0000c0b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0B2 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

Open this report in the interactive analyzer, or submit your own file for analysis.