Malicious PDF — malware analysis report

Static analysis result for SHA-256 abb30e06bc6af0a9…

MALICIOUS

PDF

122.7 KB Created: 2021-03-31 03:39:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d612ea9b6ac9a613201acfe68e7744ef SHA-1: eed492f240b39147ba63dba8a19d25e0d1fc0620 SHA-256: abb30e06bc6af0a98a9b6d04dba7bc714fa48ef16825ced55193cc12870fd755
164 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm for SEO purposes, with one primary malicious URL. ClamAV and ML classifiers also flagged this file as malicious, specifically as a phishing trojan. The presence of numerous external links suggests an attempt to redirect the user to potentially harmful websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://botokaw.ru/wix?keyword=jaskirat+singh+sidhu+humboldt
    • https://static.s123-cdn-static.com/uploads/4427274/normal_6004557d4c04f.pdf
    • https://cdn-cms.f-static.net/uploads/4447258/normal_6052adfe1835a.pdf
    • https://relitemora.weebly.com/uploads/1/3/4/3/134352419/6255139.pdf
    • https://lelebozo.weebly.com/uploads/1/3/4/5/134578107/358025.pdf
    • https://cdn-cms.f-static.net/uploads/4401545/normal_600e8da36b9a4.pdf
    • https://xilamexazoleguj.weebly.com/uploads/1/3/2/6/132695560/7356096.pdf
    • https://fiwobezamarevev.weebly.com/uploads/1/3/2/7/132740324/goworusi_regiki_guxukoj_mewotog.pdf
    • https://static.s123-cdn-static.com/uploads/4405459/normal_5fcf1a5e807f5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/latufenaw/jezobewudaken.pdf
    • https://uploads.strikinglycdn.com/files/339000a6-5047-423d-a812-90fac87f4574/lemiv.pdf
    • https://uploads.strikinglycdn.com/files/f916012f-a7ea-403f-a839-abd389b5c91b/day_trading_with_price_action_galen_woods_download.pdf
    • https://s3.amazonaws.com/filidabut/alita_battle_angel_full_movie_download_in_hindi_moviescounter.pdf
    • https://s3.amazonaws.com/bejenosugede/velavupuwaza.pdf
    • https://s3.amazonaws.com/welanisowari/lisosewudafifubeguzilitok.pdf
    • https://s3.amazonaws.com/figugipopar/28821715109.pdf
    • https://uploads.strikinglycdn.com/files/3b979bf4-67f0-4738-8bb2-289f2a6bd346/fetodusufipadomedelal.pdf
    • https://s3.amazonaws.com/lusegokaves/22887795787.pdf
    • https://s3.amazonaws.com/gewuwasi/devatu.pdf
    • https://s3.amazonaws.com/piwanisaj/anjali_anjali_pushpanjali_karaoke_free.pdf
    • https://s3.amazonaws.com/zodawanuror/google_sheets_bar_graph_template.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_off0001a281.bin
7d44a6515575d8f1d6179b4cfe1474e201e1aad024b5221f0e18cc7a966c8749		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A281 5432 bytes
font_01_sfnt_off0001b4ca.bin
ece89d6c41212ecbdad24a5900d1ce897d4f02ce4c3139ba8f51625f7afcbf99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B4CA 11956 bytes

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