Malicious PDF — malware analysis report

Static analysis result for SHA-256 721e6e6c989504b7…

MALICIOUS

PDF

46.0 KB Created: 2020-07-30 16:45:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c4c4a7022e58c39d8943479f9f3b054a SHA-1: 036a44f7d03ab1aa9cd082f66f85220e18554dd2 SHA-256: 721e6e6c989504b7a27edcab9a5ef7b9a7c90c1c4fe674290d01926244d96173
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to a redirector service (ttraff.cc) that is flagged as malicious. This suggests a phishing or scam attempt, likely using the promise of a free PDF download as a lure. The ML classifier also strongly indicated maliciousness.

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=analytical+mechanics+of+aerospace+systems+pdf In PDF document text
    • http://files.corpuschristisc.org/uploads/1/3/0/8/130813934/wogusunakoxijez.pdfIn PDF document text
    • http://files.pearlmintzerphotography.com/uploads/1/3/0/7/130740364/3628980.pdfIn PDF document text
    • http://files.sensibleshock.com/uploads/1/3/2/7/132740479/vasesejakukek_faxej_lelikam.pdfIn PDF document text
    • http://files.rotterdamenglishspeakingtheatre.nl/uploads/1/3/1/4/131408432/2855680.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/1/0432/0601/7186/files/nizazixasak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7754/1791/files/zizibakitemas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/rigatopuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kitona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2549/7239/files/72918954020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6982/3390/files/27813853609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3685/8776/files/xikafumujuvipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0143/0695/files/86829782231.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0319/8115/files/22337571677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21086069096.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_off0000744a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x744A 5272 bytes
SHA-256: 3127e7b0f0a86b5f5b1777fe4cd9de37de29bf3b4148cc2391eeb0208c9ff903
font_01_sfnt_off00008604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8604 10740 bytes
SHA-256: 0a39002f245eb733470ab80e74d80ce8c89fba0c72727a532b8e3787133a2ab3

Open this report in the interactive analyzer, or submit your own file for analysis.