Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c615d45f5facb4e…

MALICIOUS

PDF

40.7 KB Created: 2020-08-10 09:01:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9bb8bba35d61d7942cd18fa343e37d84 SHA-1: d466e3ccbb295bfbbcca52f8ecd59b57aca5e89e SHA-256: 9c615d45f5facb4e898519a830a4afe7f83187533bb961d748672447a4a92265
202 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing for a link to known malicious redirector infrastructure. The document body text, though partially corrupted, suggests a lure related to downloading a PDF converter. The presence of numerous links, including one pointing to a redirector, indicates an attempt to lead the user to malicious content, likely for further exploitation or malware delivery.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=adobe+acrobat+word+to+pdf+converter+free+download In PDF document text
    • http://files.lizzlund.com/uploads/1/3/0/8/130874680/13aa11.pdfIn PDF document text
    • http://files.davewallheating.com/uploads/1/3/1/3/131398369/5320992.pdfIn PDF document text
    • http://files.pacsc.com/uploads/1/3/2/6/132681368/cb647244ad9.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/1/0437/0441/8455/files/instagram_auto_liker_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8080/1701/files/85343303956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/2184460087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7442/7806/files/zelekugizokipakirewojam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6852/2657/files/10911663531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/jet_look_what_you_ve_done.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8748/5342/files/49225030259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6037/9286/files/66723217645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3353/4369/files/87771254499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1862/3896/files/dibegiwakivurifefuwidit.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 4

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_off000060ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60EA 5252 bytes
SHA-256: d7c765b8d76f1c17f3a7b5ad836f436e46ac9e7fdb5f369dba2bf030cb99ae5d
font_01_sfnt_off000072ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72EA 10300 bytes
SHA-256: 0de7569a3a99deb5a7a0261bc8324dbe733e78638827145b583dd49d4541e4c8

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