Malicious PDF — malware analysis report

Static analysis result for SHA-256 19f7148d2b0a31cc…

MALICIOUS

PDF

43.9 KB Created: 2020-08-07 16:03:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c2d38c1f450fb6392e5b54ef5d9c3441 SHA-1: 098126ec3a4ac50cbcf61ab71141c3befb0a57e1 SHA-256: 19f7148d2b0a31ccbda974270bb7ab8575ddcdb50292517244047a8e020c902f
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links directs to a known malicious redirector at ttraff.ru, which is likely used to obscure the final malicious destination. The document body contains garbled text but includes the URL that triggered the malicious redirector heuristic, suggesting a lure to download further content. No scripts were extracted from this sample.

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=kali+linux+tutorial+pdf+in+tamil In PDF document text
    • http://files.trudybellepartybox.com/uploads/1/3/1/6/131606502/tegakokekubek-kelaravutev.pdfIn PDF document text
    • http://files.salofarm.com/uploads/1/3/1/3/131380600/pawatowugudugabim.pdfIn PDF document text
    • http://files.shawnmichaelfiedler.com/uploads/1/3/2/6/132681985/2644071.pdfIn PDF document text
    • http://files.discountinsulation.net/uploads/1/3/1/3/131398093/5888154ec52a02a.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/1/0430/3582/0185/files/breaking_into_wall_street_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4115/3439/files/kokokuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5847/0813/files/824665516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1283/1907/files/nutijakokimobov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4513/5260/files/rizukuxujelewabonofosajad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7495/9000/files/fekuduzimunibofa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8794/4096/files/relao_entre_sade_e_meio_ambiente.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4713/1035/files/99312818221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8801/1673/files/xotanuzujetob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/49961914981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7795/9833/files/84975471011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2524/4053/files/glock_19_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8845/4559/files/nogabuxuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5181/0969/files/10520224581.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000504f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x504F 5048 bytes
SHA-256: d51fe570446559c85ba7b4aad121ea500519bd4a25e8b56465abddb4a2dde02e
font_01_sfnt_off0000616e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x616E 1912 bytes
SHA-256: 34f8d9acade7b2e100e7437976c3243dd5932ef075058ec984d43107e75db844
font_02_sfnt_off00006aad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAD 10220 bytes
SHA-256: 5f3e3730fd0e1bb0d43034ce5fda4fb6f2c5eb6b57a8aebfbc71f12f918dfa67
font_03_sfnt_off00008cd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD9 16120 bytes
SHA-256: ac800216f0f3ee730fcfd8224cb645483b57fad8ca3d10a0e7f9ae79b322be30