Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a44c10e4196db04…

MALICIOUS

PDF

41.5 KB Created: 2020-08-05 15:55:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9b3019c137d0da061c70a5319bf860fc SHA-1: 99426cde3f34d4187017975c0e67beef3a5e222f SHA-256: 6a44c10e4196db04a93fa8619e85a6b63601d378e23207ec2278aa3f7dd21ea3
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links, including one pointing to a known malicious redirector, ttraff.com, disguised as a free PDF annotation program. This aligns with a social engineering lure to install browser extensions or updates, a common method for credential theft or malware delivery. The ML classifier also strongly indicated maliciousness.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.com/pify?keyword=free+pdf+annotation+program In PDF document text
    • http://files.bexleyvoice.org.uk/uploads/1/3/0/7/130776343/sufamimosivaki.pdfIn PDF document text
    • http://files.bobsearle.net/uploads/1/3/0/9/130969354/wimuw-xutoxugaremi-togebefo.pdfIn PDF document text
    • http://files.littlehandshomedaycare.net/uploads/1/3/1/3/131383478/2121861.pdfIn PDF document text
    • http://files.fairmounthardwarelumber.com/uploads/1/3/1/8/131871674/1603663.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/1/0429/5360/5273/files/13714431884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3345/1944/files/nofar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2133/4688/files/91056645017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0401/8336/files/xavuledariw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4411/9462/files/14154983748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6043/6887/files/lawakipavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7789/2264/files/alibaba_business_model_canvas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7159/4911/files/91123523117.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7383/1072/files/xikozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/zovisezizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8851/1130/files/bemepoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0707/4723/files/19784224302.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_off00006527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6527 5104 bytes
SHA-256: ba464196ba17703b177f342ecdc3b06700b3826685b69bd1a7fe10a322fb7409
font_01_sfnt_off0000767a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x767A 10180 bytes
SHA-256: ecd64433770f0ca88a0ff43ed405261d79cea73403ecc47877d8120a3e82cc51

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