Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa3a474be9a422b0…

MALICIOUS

PDF

38.3 KB Created: 2020-08-21 14:25:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c8d3a300b1be66db5e15c29ddf52b59 SHA-1: 94e092e9b2629d95ab426280cf9441fc77cbcec3 SHA-256: fa3a474be9a422b095362e059b5526d1945fbaf235e717758fb4634c6b6f4441
234 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains references to 'sql server 2008 r2 iso file' and a URL that appears to be part of a link farm. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates that the document likely instructs the user to open a password-protected archive, a common tactic to bypass security scanning. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm designed to improve search engine ranking for malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=sql+server+2008+r2+iso+file In PDF document text
    • http://mugoda.how2productions.co.uk/uploads/1/3/1/1/131163960/rabefupi_dugoxuxifapadow_vomaluve.pdfIn PDF document text
    • http://files.nuclearwarfare.de/uploads/1/3/0/7/130740130/dd3b9f27e.pdfIn PDF document text
    • http://gilanor.givoie.com/uploads/1/3/1/1/131164250/8644611.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/1/0432/6493/4043/files/25907961800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7372/3811/files/17723313458.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/6150/4152/files/28547101100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9776/8614/files/abrsm_jazz_piano_pieces_grade_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9886/4800/files/logical_positivism_philosophy_of_education.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3673/5650/files/86477547221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5757/7122/files/contaminacion_atmosferica_mexico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2965/0843/files/78809717866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0190/5315/files/milexunadejas.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 5

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_off00004bb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BB4 4908 bytes
SHA-256: 0f149986dbb02aa175b5307f917cfeafafab152383dd5f756c44325d7e8cebdc
font_01_sfnt_off00005c74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C74 10088 bytes
SHA-256: b5620ed502f20ec1a6a9cc6771e0fcb88006e8407a10d52f7e73691ed68c6a01
font_02_sfnt_off00007eab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EAB 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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