Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7a5cf250da0be4c…

MALICIOUS

PDF

43.8 KB Created: 2020-08-05 12:25:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e71162da15514111744b1956e75ba245 SHA-1: cc82ce59a3b0ae4df1fc5075ea8cf79a6762a1c6 SHA-256: c7a5cf250da0be4c874d3aee59e2508824db939abce88b509663599f4e9987d7
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a redirector to a malicious domain, suggesting a link farm or phishing campaign. The ML classifier strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which likely leads to a further stage of the attack. No scripts were extracted, limiting the analysis of specific behaviors.

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.com/pify?keyword=anterior+tibial+tendonitis+exercises+pdf In PDF document text
    • http://files.cristalpgarcia.com/uploads/1/3/0/7/130740444/1149470.pdfIn PDF document text
    • http://files.jasonicholas.com/uploads/1/3/1/4/131453588/jeruzitito_gulabet_masakovanijipak_kovinafipez.pdfIn PDF document text
    • http://files.tabletopsportsinc.com/uploads/1/3/0/7/130775834/redixidepuve_zesidot_wekumekofoxamu_logogekiligi.pdfIn PDF document text
    • http://files.helpabee.org/uploads/1/3/0/8/130874379/0f2018ed5091a.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/1/0430/4617/4877/files/sidafazemesubuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5405/6092/files/65138159540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8450/5498/files/sawdust_briquettes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/56384234910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8134/3903/files/zafovavumotipesovazu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1619/9064/files/21207503461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6759/6184/files/81373067332.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4130/8319/files/cub_cadet_lt1042_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0372/2398/files/nijezugetasuwowim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6258/2693/files/japokozin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3847/8229/files/calendar_2020_indonesia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0489/5143/files/pevukufi.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_off00006dd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD3 5348 bytes
SHA-256: d04fa3edd2735e79d81ba8c5c23941db40ae943180a44d799d52d28bf5c5e069
font_01_sfnt_off0000800e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x800E 9956 bytes
SHA-256: 498b19f8642842a13aaea2232ea1e650ed6bb2541864275038ecd85850734725

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