Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f1075745dd16137…

MALICIOUS

PDF

70.9 KB Created: 2021-02-25 05:40:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1903e96ca4d3250304206d496d453b83 SHA-1: d642927e67dc98c647cd310ab6cbabc8e8338674 SHA-256: 9f1075745dd161374f038397dec5ddb969a9108de5f7ee6120220806dd3875be
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://crophysi.ru/award?keyword=the+lying+game+season+2+full+episodes+free+online In PDF document text
    • https://static.s123-cdn-static.com/uploads/4456398/normal_5ffe184b89ecb.pdfIn PDF document text
    • https://cdn.sqhk.co/lunosupi/jj1jjjh/how_to_link_my_boy_emulator_android.pdfIn PDF document text
    • https://cdn.sqhk.co/jizesusaxeta/8xjgEgc/land_rover_off_road_rims.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457848/normal_60246b7c30879.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417830/normal_6017a43a71036.pdfIn PDF document text
    • https://cdn.sqhk.co/vetukalujir/hhJfihd/playstation_plus_monthly_games_january_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366654/normal_5fdb32926dea5.pdfIn PDF document text
    • https://cdn.sqhk.co/livefivepa/dBZwCid/3861258191.pdfIn PDF document text
    • https://cdn.sqhk.co/mejomusajob/ihhgiau/network_watcher_traffic_analytics.pdfIn PDF document text
    • https://cdn.sqhk.co/nadipozow/dTkiLPi/phoenix_wright_switch_physical.pdfIn PDF document text
    • https://cdn.sqhk.co/mapiwoda/hhhdhcE/torn_acl_therapy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415073/normal_5fe78fe206c2c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/reserutonemik.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/sharp_aquos_32_inch_led_tv_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wekibik/89784947796.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/henkel_corporation_msds_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/18118569317.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/bazajoxon.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD29 5440 bytes
SHA-256: d98241426ac4aaf11a81aa29f67a0e56a3a6bb76568726db5b3db54de796532f
font_01_sfnt_off0000df7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF7D 9576 bytes
SHA-256: e501241ad65bf5b0bed64608fa8091289b3942e610c5481ef903f8f5a6accb92
font_02_sfnt_off0001002d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1002D 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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