Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaa22cd80a4ca284…

MALICIOUS

PDF

83.1 KB Created: 2021-01-09 18:22:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ef59ba2ba80da10c78652b90215ec084 SHA-1: 9eaa8e75e1fb6919e08f97a974623977ff1a7b50 SHA-256: eaa22cd80a4ca2848a75a3986d199260700db6ac03bb1e004e0f2a0280ad5c1a
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous external links, with a significant number pointing to a link farm hosted on weebly.com, suggesting an attempt to redirect users to malicious sites. The document body, though heavily obfuscated, contains references to 'Games bike racing 3d' and application metadata, likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffset.ru/aws?utm_term=games+bike+racing+3d PDF link annotation
    • https://bozusobogopi.weebly.com/uploads/1/3/2/7/132711975/lulobupanepaziruzu.pdfIn PDF document text
    • https://resowijex.weebly.com/uploads/1/3/4/6/134681832/9642465.pdfIn PDF document text
    • https://baxegirugono.weebly.com/uploads/1/3/5/3/135319521/vobafoxofefix-faxisamisixumi-gijegavof-daxumugabesana.pdfIn PDF document text
    • https://jaragamonobuwuf.weebly.com/uploads/1/3/5/3/135346236/lologa.pdfIn PDF document text
    • https://majaxufekebobuw.weebly.com/uploads/1/3/4/6/134605083/kagan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b029e58b-72ee-4b31-a26e-e878ffcd4b39/15367038543.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eb62f9b-9b93-4d6c-89b8-b1a8455a05b6/fisiopatologia_de_la_leucemia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20017b08-1671-47b8-ad68-dc3868a1c220/bugikizororirezotowupif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0678d02-e093-4a0c-9c6d-391b3fa02ee5/21772160756.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/caryl_churchill_a_number.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fe3c60d-eaa0-4dd2-89f7-1c508f067cc7/btd_battles_hack_apk_download.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/archer_the_warrior_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/82450448170.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_off0000e45c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE45C 5628 bytes
SHA-256: 3b09aad9c4bf83c34f7b12b427c02ed74edf9d466025d633f832eb6142f1522b
font_01_sfnt_off0000f75e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF75E 3220 bytes
SHA-256: db735a317fdcae66f42ef827155694a99d09283e1a16ebe7f151c5ed3176f108
font_02_sfnt_off000104d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104D4 11020 bytes
SHA-256: a1860efaabf272ab090a469bd64edf4c20c041830c000b71356f3abbcebc4a76
font_03_sfnt_off00012a98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A98 16036 bytes
SHA-256: 35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f

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