Malicious PDF — malware analysis report

Static analysis result for SHA-256 89b4d57205ab1f53…

MALICIOUS

PDF

94.4 KB Created: 2021-01-22 06:13:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ee483cc1ee532439559c1b10fce47838 SHA-1: 4545116c1b0b634d8e7bb9a99a78f7c3a4718d7c SHA-256: 89b4d57205ab1f5302dec3c7f2958f501d592f30c406b8cbd0918f378a244b15
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The PDF contains a mass of external links, with one prominent link pointing to 'https://trafffi.ru/aws?utm_term=aviation+routine+weather+report+metar+codes', suggesting a phishing or credential harvesting attempt disguised as a weather report. The presence of numerous PDF links, including one to 'https://s3.amazonaws.com/leteraxewe/ziwokafogabelogikozod.pdf', indicates a link farm or redirection strategy to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/aws?utm_term=aviation+routine+weather+report+metar+codes PDF link annotation
    • https://cdn.sqhk.co/supetuzitepi/HibN8mL/lajawagoxumolaxa.pdfIn PDF document text
    • https://vafumuwolefuz.weebly.com/uploads/1/3/5/3/135325426/xenirarul_xotijoxaluj_xubiwufe.pdfIn PDF document text
    • https://tabogivazosepa.weebly.com/uploads/1/3/1/8/131871767/laviramijibog.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424024/normal_5ff4306f8cb39.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455207/normal_5ffc227592b80.pdfIn PDF document text
    • https://feronodi.weebly.com/uploads/1/3/0/8/130813799/3c8bb530.pdfIn PDF document text
    • https://dewotime.weebly.com/uploads/1/3/1/6/131606762/miromez.pdfIn PDF document text
    • https://cdn.sqhk.co/mowukirew/HEckjd1/62863092623.pdfIn PDF document text
    • https://cdn.sqhk.co/pigajifaw/bUUgfii/lesson_plan_format_for_distance_learning.pdfIn PDF document text
    • https://cdn.sqhk.co/sejarepezibo/bhadxjb/rich_girl_shopping_dress_up_fashion_game_online.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/leteraxewe/ziwokafogabelogikozod.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/58947068768.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/lab_eight_population_genetics_and_evolution.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/57891379557.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_off00013405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13405 5424 bytes
SHA-256: 15fc0ae53f041a927d20535f0dc323c1d57eff45f5458cc82ed5cd28ee78fcc2
font_01_sfnt_off0001465f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1465F 11360 bytes
SHA-256: 09413499e0662c6b81baf2ca67ace652f0275efaa4c8925cdf59db44cf669d80

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