Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc3d0050d0645efc…

MALICIOUS

PDF

62.7 KB Created: 2020-11-24 06:07:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f6d115996404a72a38d77e9b3acda15 SHA-1: 1b78056cb220030d9454cac562f0980f1302ff60 SHA-256: cc3d0050d0645efcf3fecb4acae91f107f9c3525c2cc33bec5377a1f88290a7d
156 Risk Score

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 ML classifiers and ClamAV, indicating a phishing or trojan-like behavior. The presence of a large number of external links, including a link farm, suggests an attempt to manipulate search engine results or direct users to malicious content. The embedded URL 'https://traffking.ru/aws?utm_term=total+conquest+latest+version+apk' is particularly suspicious and likely serves as a lure for downloading malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffking.ru/aws?utm_term=total+conquest+latest+version+apk
    • https://cdn-cms.f-static.net/uploads/4478430/normal_5fbbd7daae39a.pdf
    • https://mesovozilepako.weebly.com/uploads/1/3/4/5/134588792/6357399.pdf
    • https://cdn-cms.f-static.net/uploads/4379846/normal_5f93169ead43d.pdf
    • https://cdn-cms.f-static.net/uploads/4365567/normal_5f944b9d58295.pdf
    • https://tuxonojetivap.weebly.com/uploads/1/3/4/4/134437157/xogizirize.pdf
    • https://gabumisuxenumu.weebly.com/uploads/1/3/4/3/134366459/monumunusivew.pdf
    • https://fipiwodumuxi.weebly.com/uploads/1/3/1/4/131453050/196221099cc1d2.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tinajabizoreguf/campaign_propaganda_mini_q_answers.pdf
    • https://uploads.strikinglycdn.com/files/840ba33d-1aeb-456c-a6b9-62a2f2906e31/sources_chaudes_pays_basque.pdf
    • https://s3.amazonaws.com/tuxenipup/vigefaxusizexugagufov.pdf
    • https://s3.amazonaws.com/pobixedele/funny_videos_of_babies_laughing_free.pdf
    • https://s3.amazonaws.com/waxegatulo/ambulance_sound_ringtone.pdf
    • https://s3.amazonaws.com/rokuwapesu/83541794509.pdf
    • https://uploads.strikinglycdn.com/files/a58ececf-54aa-44a9-8075-32ddf762beb9/connecting_words_worksheets.pdf
    • 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b7a0.bin
e51be56d6f4f83ac020156342bd4d37890479e65d607785c1bbaa1d85e8ab835
pdf-font-stream PDF embedded font (sfnt) at offset 0xB7A0 5124 bytes
font_01_sfnt_off0000c92e.bin
035397c0c7f20ca84e10d818828e27cf9aaf291d3dde8530c341e7f6bf3f99dc
pdf-font-stream PDF embedded font (sfnt) at offset 0xC92E 10332 bytes