Malicious PDF — malware analysis report

Static analysis result for SHA-256 c486f17df77f8698…

MALICIOUS

PDF

67.7 KB Created: 2020-12-15 07:30:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 542f043f9b6ce3a578c6fb06e79938e7 SHA-1: 12e3f3376e65f5ed27f96ab4e50bae0b7967721e SHA-256: c486f17df77f8698dd89237946cf0525db13ae9196a60551450d5be486c88329
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to 'trafffi.ru'. ClamAV and ML classifiers flagged this PDF as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to a Honeywell thermostat manual, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/123?utm_term=honeywell+rth6580wf+manual+book PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368752/normal_5fab7cb125aee.pdfIn PDF document text
    • https://pesadosopovito.weebly.com/uploads/1/3/4/2/134235692/df62d84d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378383/normal_5f99a3d563543.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384295/normal_5fa0127cb4cc2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378621/normal_5fc899f51212b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/china_visa_application_form.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4dd3ec89e1c4b8fd7ff57/t/5fd1beb9f2ee360040f8812e/1607581370240/savifajidulamutijuwiwi.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/personal_computer_definition.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f8872cf09257bd6c6ae2/t/5fc2177d3f75b166431bdcfd/1606555518248/poweramp_full_version_apk_cracked_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b0fb8139af037665d853/t/5fcc6c610ab5d62febea0eb1/1607232610096/the_mummy_returns_watch_online.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6e713cb936d6a06a62389/t/5fce2fa6fe657040d5bc45dc/1607348139651/dungeon_quest_script_gui.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c9703dfdd95b60f6a0d0/t/5fcf2c581b45e152edc1f471/1607412825716/zujudilefokuzodu.pdfIn PDF document text
    • https://s3.amazonaws.com/zugutixe/kedowideg.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 2

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_off0000ca99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA99 5804 bytes
SHA-256: 11d5445eba1a5f2993155dd9f1077159c608468aa060b3c11398426d0595b2c0
font_01_sfnt_off0000de4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4B 10580 bytes
SHA-256: 6a81897580e51216a7360b345a60c67937f095f34fb35156c7dbfdd712deffd6

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