Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ee2e4a81035b994…

MALICIOUS

PDF

84.6 KB Created: 2021-03-16 09:12:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04c03e67ec239efd14216940ff441033 SHA-1: 7a8d88b3ca230307338e7be9261b11696ee9b952 SHA-256: 4ee2e4a81035b994cf78e2a7cb9d387bd975132e18425a5d7141c87a1eab004b
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL leading to a site offering 'kawaii home apk mod'. This suggests a phishing or scam attempt, likely using the document as a lure to direct users to a malicious site. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/123?utm_term=kawaii+home+apk+mod
    • https://lebaburi.weebly.com/uploads/1/3/4/4/134491334/rulujutejo.pdf
    • https://zujetopefij.weebly.com/uploads/1/3/4/7/134766602/e88af9982e6aa95.pdf
    • https://lurenosofen.weebly.com/uploads/1/3/0/7/130740325/893573.pdf
    • https://furimulu.weebly.com/uploads/1/3/1/4/131411024/xokujadepoma.pdf
    • http://hs-life.ru/655529087070o81i.pdf
    • https://rofixuninapo.weebly.com/uploads/1/3/5/3/135313709/6925247824761ea.pdf
    • http://babysampler.com/358670487904rtvx.pdf
    • http://lastmarkt.ru/vimidirenaduxulijiwusodas1mmo4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://123949be-7110-4ba3-a240-a7df06fb38ce.filesusr.com/ugd/80fd5d_39e29b44b1094178b8dcf40aef6a4c19.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e067885f-ea9e-4413-9126-1025dc6476b5/kyocera_printer_drivers_usa.pdf
    • https://uploads.strikinglycdn.com/files/d13242a7-5f49-4bc7-85d8-bd63dbb42514/know_why_you_believe_audiobook.pdf
    • https://93dbb2ad-f1e8-4c6c-adfd-2ef134399473.filesusr.com/ugd/df4650_2837567d29be4fcf9a06c7cd53dde592.pdf?index=true
    • https://66f9c2bc-82a6-463d-9ccd-9c94d3d8805e.filesusr.com/ugd/b361c6_19766cd3d84446afb3b1e9d1501bd96d.pdf?index=true
    • https://s3.amazonaws.com/wuvepilamamuse/simple_meditation_guide_reddit.pdf
    • https://uploads.strikinglycdn.com/files/905da022-a9aa-4c36-bc7a-a85d6c2b7449/80969691120.pdf
    • https://uploads.strikinglycdn.com/files/16435046-fad4-4d6b-8a37-1149df65c222/common_spanish_transition_words.pdf
    • https://s3.amazonaws.com/bupijila/97285119247.pdf
    • https://uploads.strikinglycdn.com/files/830b3e07-f124-4916-a692-5a6da7008904/2nd_grade_math_workbook.pdf
    • https://ffb80149-315c-4936-8637-e87477b606fc.filesusr.com/ugd/e7410d_6d8a79187b5c4ad993d84eb777db7190.pdf?index=true
    • https://6e37e838-c278-4d46-baa9-25b8497af200.filesusr.com/ugd/fbcb80_8fa1eb5c3b3846e0b04be16fb66c5cd0.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f627.bin
5cd2f2670c3cb605c6d7a72aace3a063d880a0b662765e97f1314179ddca7c1f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF627 5016 bytes
font_01_sfnt_off00010725.bin
60a8dc0249d32d347889fe03c1871dcb2b2105865f085af021dfb0a97751156e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10725 11724 bytes
font_02_sfnt_off00012ed0.bin
93f5513e04c1eafdba272549e176772ab9a5fbf35ff891f5b73abd4e4452458b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12ED0 16120 bytes

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