Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1b1bd3c70ed903e…

MALICIOUS

PDF

43.2 KB Created: 2020-08-19 01:17:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 32bc88fe266a66344690d751e0dd1b6b SHA-1: 80e52d40ac2de244e0f6dd2285bc92be7a6514fc SHA-256: b1b1bd3c70ed903e4b81c974aaddbb525bb7b2ffbb932a9a5c2f7d734f124538
194 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning model and heuristics indicating malicious redirector links and a link farm. The document body contains numerous embedded URLs, including a suspicious link to 'ttraff.ru', which is identified as a known malicious redirector. The presence of a large number of external links suggests an attempt to lure users to potentially harmful sites.

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=chloramine+by+product+formation In PDF document text
    • http://files.roselapiere.com/uploads/1/3/0/7/130739490/piriresewamavel_tavexu.pdfIn PDF document text
    • http://duzovesu.exceedflooring.com/uploads/1/3/2/6/132682883/3947946.pdfIn PDF document text
    • http://fubelisi.4thoughtpsychology.com.au/uploads/1/3/1/4/131437423/xajigem.pdfIn PDF document text
    • http://files.langsidebedandbreakfast.com/uploads/1/3/0/7/130775304/9215669.pdfIn PDF document text
    • http://files.horseplayfarms.net/uploads/1/3/2/3/132303378/6566907.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/1/0431/1754/3585/files/kopivokubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8186/7176/files/wewagilapajabunoves.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5179/5107/files/77274925384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4416/5016/files/aida_model.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2026/2308/files/importance_of_hygiene_and_sanitation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/3288/1824/files/baseboard_heater_installation_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0536/9758/files/jepikite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5025/1941/files/fonctionnement_de_l_appareil_respiratoire.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 6

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_off00006af4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF4 5364 bytes
SHA-256: 73923887f630fbbe6786fff45bb610a39cddc0b379fc36d940bff91cda61df20
font_01_sfnt_off00007d02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D02 10244 bytes
SHA-256: b02abc56a94b801f424aba4cda5b5599a5c7b7997df62ea4bb4e169925e05ad2

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