Malicious PDF — malware analysis report

Static analysis result for SHA-256 a56dbdfaea5022eb…

MALICIOUS

PDF

34.0 KB Created: 2020-08-22 03:24:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 80da3c8634d753e0c6f35d00898f0fbb SHA-1: 6124bf67abc868efe9dfafff48db89501d78b570 SHA-256: a56dbdfaea5022ebd4a80d11c1ab85610d64b20640f5744cb9ccf760b4d4a304
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL and a reference to a 'Microsoft infrastructure planning and design guide', suggesting a lure. The file also contains a large number of external PDF links, many hosted on Shopify, indicating a link farm for SEO manipulation or to obscure the final malicious destination.

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=microsoft+infrastructure+planning+and+design+guide In PDF document text
    • http://files.juliemidkiff.com/uploads/1/3/1/8/131872021/kategunob_kixitoruju_xukufubenesujit.pdfIn PDF document text
    • http://parexagag.nohsfamily.com/uploads/1/3/2/6/132681670/3522570.pdfIn PDF document text
    • http://pawogogi.joychoice.net/uploads/1/3/1/0/131070109/sixemefunasoti.pdfIn PDF document text
    • http://files.sovereignfoodie.com/uploads/1/3/0/9/130968968/jovetesezu.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/1/0434/9935/6324/files/54251973709.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7012/8277/files/lozuzorapevatelolufiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4151/2855/files/rinofojaxivozabowofaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/gesanujewoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5905/2706/files/ralovojasipujitewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6177/2442/files/80607063658.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9186/0379/files/zunopikunanasinanodafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8276/0870/files/85721497304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1889/5010/files/google_chromecast_extension_windows_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6031/3763/files/matola.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_off000048bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48BB 5328 bytes
SHA-256: 7a4d2f09e2dd1081af2b452211f90a10b6f9087238eedd26e4b58e67976792ff
font_01_sfnt_off00005ae7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AE7 9392 bytes
SHA-256: cd68e3070247f4cc68129f4fe11d4c54dae1cf0d078d87003a535968302f275f

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