Malicious PDF — malware analysis report

Static analysis result for SHA-256 62fa9ca8a2109519…

MALICIOUS

PDF

83.7 KB Created: 2021-03-10 20:41:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f0022fde297c9a3f8192f5d9fd6599e5 SHA-1: 5448ca905024c74b3f5bbb9d56a51a3163c44b95 SHA-256: 62fa9ca8a21095193f14a13ca8f07f7ff417480520d49a4f516fc3ba14d97fbb
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://seumenha.ru/award?keyword=ceremony+silko+pdf+free PDF link annotation
    • https://cdn.sqhk.co/zabitokepum/4esabgh/marco_island_brewery_menu_prices.pdfIn PDF document text
    • http://lenudes.com/28382615026maw3r.pdfIn PDF document text
    • http://ryduslim.website/craftsman_2500_psi_pressure_washer_pricevbmax.pdfIn PDF document text
    • https://gapepaweduli.weebly.com/uploads/1/3/5/4/135400658/205363158c2f.pdfIn PDF document text
    • http://baranaydin.org/what_does_555_mean_in_love6nt4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393624/normal_601b85fd9d0f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417818/normal_5fcc2634dcc43.pdfIn PDF document text
    • https://lemorixumo.weebly.com/uploads/1/3/4/7/134748879/gevemegusisovuma.pdfIn PDF document text
    • http://noksipals.online/sisters_raina_telgemeier_genrept5ac.pdfIn PDF document text
    • http://nefuwumimo.iblogger.org/13189279387.pdfIn PDF document text
    • https://cdn.sqhk.co/wovenebi/ihS8phi/nike_athletic_apple_watch_band.pdfIn PDF document text
    • https://cdn.sqhk.co/pabopimi/jcOswVY/lamewa.pdfIn PDF document text
    • https://cdn.sqhk.co/sebixodof/h8igIPq/lego_marvel_super_heroes_cheats_ps4_deadpool.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422893/normal_5fdc61b33bfc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426423/normal_60265ff022517.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475582/normal_6036879b57b15.pdfIn PDF document text
    • https://cdn.sqhk.co/kixituvelil/fhijfhi/download_game_badminton_league_mod_apk_2019.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495696/normal_5fec73df3e7d5.pdfIn PDF document text
    • http://mebesovinu.22web.org/incident_report_rochester_ny.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367646/normal_5ff04a9c8df05.pdfIn PDF document text
    • http://sobakin.space/colorscapes_color_by_number_pixel_art_coloring_online91bz7.pdfIn PDF document text
    • https://bipuwuvi.weebly.com/uploads/1/3/0/7/130776795/guzise-nunabokapej-momupiz-sidoguki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378852/normal_603d3110b86ee.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wejelinemadagep.rf.gd/rizadorumuxowuvoxod.pdfIn PDF document text
    • http://jujimewukekupur.epizy.com/8559377115.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D8E 5048 bytes
SHA-256: 626a604d21991e1f5c98225d6d44313869524c8b0ca07cee78c6cca300cf8760
font_01_sfnt_off00011eb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EB3 10256 bytes
SHA-256: be22539255ffab72f5dd27a43ab16b951a3e5e8b9b4411467a554eb64d9f6659

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