Malicious PDF — malware analysis report

Static analysis result for SHA-256 87223121797af938…

MALICIOUS

PDF

59.8 KB Created: 2020-08-22 08:20:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 77510d33996c564ac962f4f34df814af SHA-1: b812aa495d2846e008a9b74851f133b4ed749f69 SHA-256: 87223121797af9386fa93abffd1b501058f8fe22f68757f23ceab803c71d5f6b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body, though heavily obfuscated, contains a reference to the same malicious URL, suggesting the primary purpose is to redirect users to potentially harmful content. The ML classifier strongly supports the malicious verdict.

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=android+sqlite+foreign+key+not+working In PDF document text
    • http://files.conniedillon.com/uploads/1/3/1/8/131857626/2385644.pdfIn PDF document text
    • http://files.rmheatingandcooling.com/uploads/1/3/0/8/130814169/2817014.pdfIn PDF document text
    • http://files.romboproductions.com/uploads/1/3/1/4/131452922/dovamogozegukuw_dilitutewono_masedor_jaxafenebuke.pdfIn PDF document text
    • http://files.stefanomitrione.com/uploads/1/3/2/6/132695586/lefelakazubaju.pdfIn PDF document text
    • http://bawowu.officialbluehangers.com/uploads/1/3/1/6/131636725/5014831.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/1/0434/1766/5703/files/consett_weather_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9999/6569/files/lr_baggs_lyric_installation_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5970/7037/files/27551320450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7448/6421/files/tatulabujevigemutowamijup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5787/2033/files/97630214779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/blockchain_technology_architecture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0614/7235/files/beyond_the_sea_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6601/5396/files/differential_calculus_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7061/1871/files/47676587752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2754/5763/files/avancemos_4_textbook.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 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000099bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99BB 5340 bytes
SHA-256: 031cc786926906c06e6c744b5dac2e980ab4bf889f83b1b84e9d4773fc1ba45d
font_01_sfnt_off0000ac39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC39 5240 bytes
SHA-256: eef94c3cf8964d492dde082c5c954d3a95e961b6ae9650652d683a43b847ba77
font_02_sfnt_off0000be27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE27 10320 bytes
SHA-256: 9f4d53345f66d325ee5fe8c320b317b5330d0fde25cb870d31516a32699a9d7a

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