Malicious PDF — malware analysis report

Static analysis result for SHA-256 a75ab8051a981829…

MALICIOUS

PDF

33.7 KB Created: 2020-08-19 03:18:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a0c7cd6a3f5f65f969e931214b8ae35e SHA-1: 79f6f65b7c0010efb4793d668bef64ed54d9e1e1 SHA-256: a75ab8051a9818298e2ab777d8c1d043a99bd0b3603b4ba2854bf0ff3d53cbbc
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is used to obscure the final destination. The document body, though heavily obfuscated, contains the URL that triggers the redirector. This indicates a phishing or social engineering attempt to trick users into visiting malicious sites.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=csumb+campus+map+pdf In PDF document text
    • http://lowugipe.jobsopportunitiesenterprise.org/uploads/1/3/2/7/132740541/c245950.pdfIn PDF document text
    • http://files.ninjamagik.com/uploads/1/3/0/8/130874629/jatupisejumelovavog.pdfIn PDF document text
    • http://files.hikingforthescaredycat.com/uploads/1/3/0/8/130874368/56d84bdf7.pdfIn PDF document text
    • http://ladiv.tender4life-project.org/uploads/1/3/1/4/131407370/jodato.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/1/0437/5943/5928/files/pabadunanimogetisatal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2511/2988/files/34221397317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3729/4741/files/62191764716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8091/7926/files/74698598555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1583/9645/files/que_es_solucion_isotonica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3122/2689/files/the_odyssey.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9028/8535/files/mupumukosap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7125/7241/files/air_dryer_working_principle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4610/9345/files/mewowegofagevubamexigosom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5543/2348/files/22732912761.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_off0000454e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x454E 5216 bytes
SHA-256: b476ffb1fbbfdd4a590edb459c80c072ee5168afe990f435dd57b24a5bd4f94b
font_01_sfnt_off000056f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56F7 10364 bytes
SHA-256: d2253bf952c25b1de565c0bc84109c4efd93cec1a33312bc4d9f15399679a308

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