Malicious PDF — malware analysis report

Static analysis result for SHA-256 05de97b88e3034af…

MALICIOUS

PDF

73.6 KB Created: 2021-03-02 15:24:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 077b55bff3a02d771b76b6fe58c782e2 SHA-1: a67d0920280a1e364d9f1e0f3845115b3b9b0d94 SHA-256: 05de97b88e3034afc3589382028297c2c3d223a7f46a8464b07635ec1ad9744a
192 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it links to known malicious redirector infrastructure and is flagged by ML classifiers as malicious. The embedded URLs, such as 'https://crophysi.ru/award?keyword=how+to+ground+balance+a+garrett+ace+400', are likely used to lure users into clicking and potentially downloading further malicious content or submitting sensitive information. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a phishing or trojan distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8930

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://crophysi.ru/award?keyword=how+to+ground+balance+a+garrett+ace+400 In PDF document text
    • https://cdn.sqhk.co/lakivasulis/idGhgzE/48254747730.pdfIn PDF document text
    • https://cdn.sqhk.co/zalivelo/hell3jg/jw_library_para_macbook.pdfIn PDF document text
    • https://cdn.sqhk.co/zasemewiti/eJmcV4E/29870459405.pdfIn PDF document text
    • https://cdn.sqhk.co/vumusokutil/Ejf7aib/exploding_kittens_playing_cards.pdfIn PDF document text
    • https://cdn.sqhk.co/fewoxenovof/pihpgjn/real_bike_racing_happymod.pdfIn PDF document text
    • http://icub.tech/architectural_home_design_software_freeh0h30.pdfIn PDF document text
    • http://copytoshka.ru/xanowejiwazeqyj.pdfIn PDF document text
    • http://dlkmvkoenv.info/casio_g_shock_rangeman_replacement_bandhk8u2.pdfIn PDF document text
    • http://fortuneocredit.com/27542694745w6cjw.pdfIn PDF document text
    • https://cdn.sqhk.co/nerurepaza/kNggole/download_flippy_bottle_extreme.pdfIn PDF document text
    • https://cdn.sqhk.co/wodaximewule/gebzcib/project_drift_unlimited_money.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/eTjjRbl/blue_flag_with_yellow_star_and_red_stripe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/marine_biogeography.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/visual_identity_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/gypsy_moth_life_cycle_michigan.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/hindu_god_name_list.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/12049256520.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACE 5188 bytes
SHA-256: 6d56abb8ea1a2e1975e5b02ea713da1eb0b526d8c96ef5afa46cda77463e5d13
font_01_sfnt_off0000fc8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC8F 14524 bytes
SHA-256: cc4abe1b85e0455b9454bb46547f88d9e71f2d6e48478d26b3c7a0d58632e6ad

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