Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bdbc32e8a89486d…

MALICIOUS

PDF

38.3 KB Created: 2020-08-14 06:11:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f030ec5042400c79803f35873ec9ecc6 SHA-1: 34a15772a0177b1d4044f65636c8e428c853a0ad SHA-256: 1bdbc32e8a89486d16c8728205babc68cc6602fa70dfdf5373520d8fc68d7b47
194 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to a link farm infrastructure designed to redirect users to potentially malicious sites. The primary redirector URL is https://ttraff.ru/pify?keyword=barbell+front+squat+form. The document body, though heavily obfuscated, contains this URL and other links, suggesting a social engineering tactic to drive traffic to malicious infrastructure.

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=barbell+front+squat+form In PDF document text
    • http://files.noonols.org/uploads/1/3/0/7/130739835/0bc3b72.pdfIn PDF document text
    • http://boxugopi.explainitagain.org/uploads/1/3/1/4/131438234/586107.pdfIn PDF document text
    • http://saxakinox.finditfilms.com/uploads/1/3/1/3/131378776/40a404c3712.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/1/0429/1988/7001/files/vitoxegopinolalikusuvuvit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/asbabun_nuzul_al.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6100/9818/files/neet_biology_syllabus_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/5095552589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/zozepofejojisowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2648/9249/files/causas_del_cancer_de_piel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2172/8919/files/tutolokigurixixoletoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2156/4066/files/gosudalosebozomovor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2846/1206/files/adverbs_worksheets_for_grade_7.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_off00005c3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C3D 5228 bytes
SHA-256: 03778b883678fe63821c194ee89fc1430d5f5a80615c9e88ad4adf4e8c2cacfc
font_01_sfnt_off00006df2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF2 9120 bytes
SHA-256: 3169cf856096c281d2f946199cee34079408857cde5a8ec458405038377611c5

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