Malicious PDF — malware analysis report

Static analysis result for SHA-256 33556e328c4a061a…

MALICIOUS

PDF

46.3 KB Created: 2020-08-06 10:07:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e18d1e6f2b0d8ffe3cbbb45b07de55cb SHA-1: 3f02c019fc14dacdb19d658d0aaade8b242ff75d SHA-256: 33556e328c4a061a5cf61d3f72ce41790c7b3572c74ec9ff4bb447c9c8bef213
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to ttraff.ru. Additionally, the ML classifier strongly flagged this PDF as malicious. The document body itself contains the same URL, indicating a direct attempt to lure the user to a potentially harmful site. The presence of embedded URLs and the overall structure suggest a phishing or malware delivery attempt.

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=assembler+2+pdf+en+1+seul In PDF document text
    • http://files.aletalederwasch.com.au/uploads/1/3/0/8/130874254/7ed96c0625.pdfIn PDF document text
    • http://files.megumihiramoto.com/uploads/1/3/0/7/130775182/1001091.pdfIn PDF document text
    • http://files.websterandmarvelelectric.com/uploads/1/3/1/8/131871518/giget.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/1/0427/4061/3286/files/46720977540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9866/9220/files/85560573649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6956/3290/files/55706781710.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2909/3800/files/allahabad_high_court_aro_notification_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0488/6166/files/ledategozor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4375/0049/files/vimux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8542/2997/files/genetics_grade_12.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3210/1543/files/xisipudaminepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/zogagibape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/satir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9122/1911/files/tapuriwejorawagasome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5335/9005/files/8185891459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3182/1473/files/6085171921.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2476/7400/files/book_of_spells.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 8

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_off0000755e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x755E 5292 bytes
SHA-256: f69c07693c86b59032de4affa319273aa06a4f9038981e14a3f6bab33e709ea4
font_01_sfnt_off00008749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8749 11668 bytes
SHA-256: 51f33c013b1c291a94ec9970f032dab97b24fb172550ac2c001acc448784336e

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