Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae096db66a2e2773…

MALICIOUS

PDF

43.6 KB Created: 2020-08-14 03:01:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a9030c537ced314cfdb148907d9adeec SHA-1: d86e0cbacb0c5b8a6020f45a967d2235497d032a SHA-256: ae096db66a2e277308d326e050c06fa9450f295aed1bf89a9ee68522e6db41d0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, including one pointing to a known malicious redirector at `ttraff.ru`. The heuristic `PDF_SEO_LINK_FARM` indicates a large number of links, many hosted on `cdn.shopify.com`, suggesting an attempt to create a link farm for SEO manipulation or to distribute malicious content. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves luring users to malicious sites via deceptive links within the document.

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=data+analysis+test+questions+and+answers+pdf In PDF document text
    • http://koxexi.jensencars.org/uploads/1/3/1/6/131606027/eecb7c0ce8d.pdfIn PDF document text
    • http://files.cold-war-racers.com/uploads/1/3/1/8/131856129/xitakova_zagovapizafole_tajaropiludez_pezojarisovoku.pdfIn PDF document text
    • http://files.slowfoodcaterers.com/uploads/1/3/0/8/130815311/7e0a6cb51554.pdfIn PDF document text
    • http://files.hrv4training.com/uploads/1/3/1/4/131437601/depigazudan-doruxasasalimig-kojatimifusaj-nesilezuvotobe.pdfIn PDF document text
    • http://files.canadiandoveassociation.com/uploads/1/3/1/1/131164081/2480169.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/1/0432/5156/4707/files/baermann_clarinet_method.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9354/8444/files/38297359095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4429/1228/files/51435495451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4877/2508/files/96776359437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1561/8215/files/83883511765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2240/9125/files/chad_yes_meme_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6965/1609/files/40872024726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/7118/8642/files/bandolerismo_en_colombia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0835/2679/files/96445942011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4396/2532/files/fudovagutone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5729/9097/files/5358529738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6617/1296/files/xevasonoxoguw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8648/7455/files/11514724169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4621/4564/files/59072774204.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD4 5356 bytes
SHA-256: 7649ccba91f89a210e9ac4dd900829243c37a1df098312a4545658ddb9f433f0
font_01_sfnt_off00007e2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2F 10228 bytes
SHA-256: 7671ec323cc50ce244b805d272f633ffdc8a915ba90eb80936cd40dea67797e2