Malicious PDF — malware analysis report

Static analysis result for SHA-256 f305b9370c8463ad…

MALICIOUS

PDF

46.6 KB Created: 2020-08-05 03:00:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 59fd7b420a48cb266a117cc6d37fad83 SHA-1: 980c3ed7f5de4eed90cc66c104adcb715bc4991b SHA-256: f305b9370c8463adf60fc22a6f6abd86623e20854615ba514bd3ce9622b9f181
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=ms+excel+tutorial+2020+pdf+free+download`. The document body, though heavily obfuscated, contains this same URL, suggesting it's the primary lure. The file also exhibits characteristics of a link farm, with numerous external PDF links, including one hosted on `cdn.shopify.com`. The overall pattern suggests a phishing or scam attempt disguised as a tutorial download.

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=ms+excel+tutorial+2020+pdf+free+download In PDF document text
    • http://files.mariealohalanibrown.com/uploads/1/3/1/4/131411539/sidomeme-fazenopap-nizafelu-tutufojevi.pdfIn PDF document text
    • http://files.snowypeaksoap.com/uploads/1/3/2/3/132302973/a7512c13cdce8e.pdfIn PDF document text
    • http://files.startxbenefits.com/uploads/1/3/1/4/131406449/ee3c3461e8.pdfIn PDF document text
    • http://files.westendjiujitsu.com/uploads/1/3/0/7/130740112/sixowupozikusujid.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/1/0433/7745/9363/files/37414926287.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5290/0260/files/pekoxavaremujarekek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6744/0294/files/environmental_economics_and_management_callan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5502/2234/files/dironugidulewegorasejet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/introduction_to_genetic_analysis_9th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4535/5674/files/dofimimazoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3988/1373/files/xaxozekozivewefolirazivef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/wipidamatevigawata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5706/9721/files/38835480468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8652/0224/files/55376021209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3459/0888/files/23727785815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2775/1321/files/50702162647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2299/2028/files/mugatovosiruniruzizosof.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007889.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7889 5588 bytes
SHA-256: 1860d49fa8d6c3bf7f6bd070dbfc5449c9fe9387e64489498f6a5256d97359db
font_01_sfnt_off00008bbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BBD 9744 bytes
SHA-256: 6caf6c7f7920237bf8b47bbbe7c218ad547c370c5606956e497df58b9f20d721