Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a9d2e4fd9453a3f…

MALICIOUS

PDF

49.7 KB Created: 2020-08-12 04:54:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 311027a14de303bbb840c63a274434a8 SHA-1: 9fd70d7aea3364e6f9019c6f5abc46ac1a8d0f96 SHA-256: 3a9d2e4fd9453a3fd46c84503c405a1dc39fba6bf5d92358f5fa0f6f14adfc51
194 Risk Score

Malware Insights

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

This PDF file contains a significant number of embedded links, many of which point to Shopify domains but are likely part of a link farm for SEO poisoning. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=basic+sql+queries+interview+questions+pdf'. The ML classifier strongly indicated maliciousness. No scripts were extracted, but the primary attack vector appears to be user interaction with the malicious 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=basic+sql+queries+interview+questions+pdf In PDF document text
    • http://files.regalbakeryusa.com/uploads/1/3/1/4/131406412/7743718.pdfIn PDF document text
    • http://files.kerriwrites.com/uploads/1/3/2/3/132303353/c9d8d369.pdfIn PDF document text
    • http://filido.2018vote.us/uploads/1/3/2/7/132710779/tidas.pdfIn PDF document text
    • http://files.ardor-innovations.com/uploads/1/3/1/4/131406412/watoxufarisekam.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/1/0428/7430/6727/files/12765046790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/88498938067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5039/4019/files/general_chemistry_experiments.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4017/7314/files/lefabosafas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2322/0392/files/merizoxutixipemuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3355/8182/files/31294091436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72438278193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0210/9856/files/bokivawedagut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7302/8775/files/social_media_platforms.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_off00007c1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1B 5476 bytes
SHA-256: 200d92b09233d82fc9fa10c42ceeb6d7fd6fbb62479ab1449761006dca17d575
font_01_sfnt_off00008ed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED4 13244 bytes
SHA-256: 399e6930bb5756fa2e7789567cdd4e8769b050d4a57aa3fefc870c6ea75a3fac

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