Malicious PDF — malware analysis report

Static analysis result for SHA-256 f61ed49c8f6ce8dd…

MALICIOUS

PDF

40.4 KB Created: 2020-08-11 20:44:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ff015df8441e2452778cd69c47d89014 SHA-1: fc66b4c34fda1a50e8f393890b26f55edb76b01c SHA-256: f61ed49c8f6ce8dd49568e7255034418bb146de9cfd19854cd60a4bde744eab5
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=autodesk+cfd+simulation+tutorial+pdf'. This indicates the document's primary purpose is to trick users into visiting a malicious URL, likely for phishing or malware distribution. The document also contains a PDF link farm heuristic, suggesting it's part of a larger SEO poisoning campaign to drive traffic to potentially harmful content.

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.cc/pify?keyword=autodesk+cfd+simulation+tutorial+pdf In PDF document text
    • http://files.firstpresbyteriangreensburg.com/uploads/1/3/2/6/132681392/watevipusuboz-ponixobalu-voxare-bibosezewakesaz.pdfIn PDF document text
    • http://files.natural--living.com/uploads/1/3/2/7/132710601/7720991.pdfIn PDF document text
    • http://files.capriliciousjewellery.com/uploads/1/3/0/7/130739490/1809953.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/1/0432/6827/6384/files/3291103425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7157/6993/files/bd_chaurasia_human_anatomy_for_dental_students.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6205/9427/files/fedobagirel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6999/7217/files/14866901389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2157/4044/files/vatonanuroj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1384/8731/files/10674725179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2757/0596/files/vajizerowavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7824/4765/files/bangladesh_railway_application_form_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7840/9639/files/17231629370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8196/5461/files/17581947186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7190/4673/files/4278305199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/filokalewejunimasejipi.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_off000060df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DF 5356 bytes
SHA-256: 82b691b1a0b8300245d21809c5f9c412f342c4a1b61d65f7bdc1d4b7f0036250
font_01_sfnt_off000072f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F7 9908 bytes
SHA-256: 921d8571e9c2246fbbf5499b43055acb66b2f00000625fa28a07223bafa06018

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