Malicious PDF — malware analysis report

Static analysis result for SHA-256 de77a2fc7d68414d…

MALICIOUS

PDF

40.7 KB Created: 2020-08-24 05:21:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fc140c128c85dcf4f24549ef2faae7bd SHA-1: ad3e4dd0fdbdd8d24bbaff60dd464cd415d185ed SHA-256: de77a2fc7d68414d9c0a87fa03f5e75d5aaff1a9548735b51b8f8090b0b3053b
162 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large external link farm. The ML classifier also strongly indicated maliciousness. The document body contains embedded URLs, including a redirector URL and numerous links hosted on cdn.shopify.com, suggesting a link-farming or redirection-based attack. The primary malicious IOC is the ttraff.cc redirector.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=android+auto++hyundai In PDF document text
    • http://files.oliverootsllc.com/uploads/1/3/1/0/131070792/tidekufaw-vuxevuvam-finemawenududo-zorijovavarema.pdfIn PDF document text
    • http://files.countrywalkvet.com/uploads/1/3/2/7/132741029/viwekese.pdfIn PDF document text
    • http://files.lewesunleashed.org/uploads/1/3/2/6/132681501/laliku.pdfIn PDF document text
    • http://files.plasticproductionallc.com/uploads/1/3/1/6/131636612/72507fd.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/1/0434/1425/7815/files/hori_rap_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2644/0607/files/70861562622.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1097/2056/files/kitekutenabuparad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/sikepexaxobawig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3137/9618/files/xusepod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5290/0260/files/dukelugizezibidetumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9421/1750/files/eso_lycanthropy_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6108/4322/files/uc_browser_android_software.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9108/6750/files/install_retroarch_on_raspbian.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4636/1505/files/related_studies_about_tardiness_of_students.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 7

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_off00006158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6158 4792 bytes
SHA-256: a17439146325de25c7212d3489d83a5cade3b833dfda2ea62722e0320dedbd0a
font_01_sfnt_off0000719c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x719C 10712 bytes
SHA-256: faaaba562010160ca0ea6cc69f49aa434ba19d4a23c9c8ea6bdafef1cfae989b

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