Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c82e50e9279fe92…

MALICIOUS

PDF

48.4 KB Created: 2020-08-23 23:21:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 98db66a35eee1338672d2f6794e1a44b SHA-1: 7eee0a9b452c78b8896a4db40cd6b8fa888b295e SHA-256: 8c82e50e9279fe92ce9424e7c2d109390032e39b4e7c133fbc1c9962652ac679
194 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 a malicious redirector link and a large number of external PDF links, indicative of SEO manipulation or a link farm. The primary malicious URL identified is https://ttraff.ru/pify?keyword=good+food+guide+hobart. The document body contains garbled text but includes the same URLs found in the heuristics, reinforcing the malicious intent.

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.ru/pify?keyword=good+food+guide+hobart In PDF document text
    • http://files.robynpforrryan.com/uploads/1/3/1/0/131070491/lapigitebuwes.pdfIn PDF document text
    • http://pedomefi.redlineinstallers.com/uploads/1/3/2/6/132680981/jojufunijovowewobu.pdfIn PDF document text
    • http://topuvowur.bremermountainbaskets.com/uploads/1/3/0/8/130814995/wudumoxolowenupur.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/1/0431/1315/2673/files/ptet_college_allotment_list_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3258/2056/files/26664038800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3436/1503/files/14036667614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6369/6799/files/42087136432.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2160/4763/files/kindergarten_color_pattern_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2151/6448/files/wuzudikolovasav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9782/6207/files/39932783708.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6147/7527/files/dixiwadunatulafuzijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7341/3028/files/gofemabegogavepe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9165/6864/files/63180214575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8424/2337/files/paxawipokubewovur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5806/9655/files/97516295757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1338/9992/files/soal_akuntansi_perusahaan_jasa.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_off00007f02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F02 5128 bytes
SHA-256: b7fb4100fa9647982618653fa2d5da4397b3461832f6bd13f701361bd60295fd
font_01_sfnt_off00009072.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9072 10652 bytes
SHA-256: c4fdf8222fac6e04f3d5bc74e3f41ca0e27183db5e929e060e6c88e5d92ed174

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