Malicious PDF — malware analysis report

Static analysis result for SHA-256 de17e95046d5a57e…

MALICIOUS

PDF

136.5 KB Created: 2021-03-30 03:49:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 702578e190a45c25004fe762275a9de8 SHA-1: f38da688e0729b134ca7ec935d82c06731560c49 SHA-256: de17e95046d5a57e9419f0448f3687e3b8454f721b0fc4f9b835a364dc589074
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which are generated SEO-style links pointing to other PDFs. One of the primary links, 'https://baarspo.ru/award?keyword=middle+age+english+literature+pdf', is flagged as unknown reputation and is likely part of a phishing or malware distribution scheme. The ClamAV detection and ML classifier also indicate malicious intent, suggesting the document is designed to exploit users through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9120

Heuristics 4

  • 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
  • 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://baarspo.ru/award?keyword=middle+age+english+literature+pdf
    • https://cdn.sqhk.co/rekutadis/z6jcng7/20311772293.pdf
    • https://cdn.sqhk.co/kixobaza/igoXijy/kosos.pdf
    • https://cdn.sqhk.co/tisewesir/jh0jjji/vidobosixoxe.pdf
    • https://cdn.sqhk.co/wuluzajiroz/dibhbib/mimpi_gigi_taring_atas_bawah_copot.pdf
    • https://cdn.sqhk.co/jedivejuruwo/LgjQhjc/jelube.pdf
    • https://cdn.sqhk.co/wirubetena/EB0ia6u/22962956234.pdf
    • https://cdn.sqhk.co/fujalapevame/igxjejc/nibajakiguwefonowus.pdf
    • https://cdn.sqhk.co/janezewufaj/ighdUgg/equalizer_hitch_for_sale_craigslist.pdf
    • https://cdn.sqhk.co/miwavilusaji/ijhePhn/39773507403.pdf
    • https://cdn.sqhk.co/jesotipo/iXXttia/correct_score_betting_tips_apk.pdf
    • https://cdn.sqhk.co/melobokodijo/dlcoYPD/grow_stone_online_2d_pixel_rpg_mmorpg_games.pdf
    • https://cdn.sqhk.co/kenoramof/heZv2e6/nadivikidokijakuzarenaso.pdf
    • https://s3.amazonaws.com/latufenaw/15494048222.pdf
    • https://s3.amazonaws.com/vufupu/7685554286.pdf
    • https://s3.amazonaws.com/xomudufe/blueberry_cheesecake_nutritional_information.pdf
    • https://s3.amazonaws.com/bajuse/econometrics_journal.pdf
    • https://86a9da1b-0b57-4b35-a77a-523886b904cd.filesusr.com/ugd/0d9a50_2833b998cee144c59e9a5a2b2b25de6f.pdf?index=true
    • https://s3.amazonaws.com/pevuwarobuvowa/explain_the_meaning_of_the_credit_terms_2_10_n_30.pdf
    • https://9f349447-249b-4747-956a-316fe86e371b.filesusr.com/ugd/d2b720_7206f2872a8840599a8b9367e6b2a44d.pdf?index=true
    • https://s3.amazonaws.com/fexuror/cpc_certification_exam_study_guide.pdf
    • https://s3.amazonaws.com/mutirexa/24467404769.pdf
    • https://s3.amazonaws.com/wenobagupexekap/stanley_500_amp_jump_starter_not_charging.pdf
    • https://9e7b01ce-91ce-414a-93c5-ade8df4b7359.filesusr.com/ugd/cfbfd2_a20d6001c0b74af1966c33a278969d17.pdf?index=true
    • https://s3.amazonaws.com/tuxalowafokuvo/20998898842.pdf

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