Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fb510ad246ec19f…

MALICIOUS

PDF

75.6 KB Created: 2021-03-21 08:53:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 12510d8c6cc8d7c4a05b90722328b8dd SHA-1: 83fc20af0b94668cd7095508ceccb3619e1d608b SHA-256: 0fb510ad246ec19f66971453065544416507e5e3cd1f47e9286089a71a44e7ab
192 Risk Score

Malware Insights

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

The PDF contains multiple links to external websites, with at least one identified as a known malicious redirector. The presence of a 'download button' heuristic further suggests a lure to trick users into downloading malicious files. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=18%252B+khatrimaza+movie+download In PDF document text
    • http://bagawixaj.mywebcommunity.org/71581809045.pdfIn PDF document text
    • https://cdn.sqhk.co/zoburawava/aibjeia/car_x_drift_racing_online_pc_mods.pdfIn PDF document text
    • http://ziwewixowele.sportsontheweb.net/bankers_adda_december_current_affairs_2020.pdfIn PDF document text
    • http://bukipumil.mypressonline.com/50818077148.pdfIn PDF document text
    • https://pepesavujol.weebly.com/uploads/1/3/1/0/131071240/9481702.pdfIn PDF document text
    • https://cdn.sqhk.co/diratukuz/feghWgd/1_hour_nature_sounds_relax_birds_singing.pdfIn PDF document text
    • https://gorofegi.weebly.com/uploads/1/3/4/4/134462705/vogixeb.pdfIn PDF document text
    • http://sukutoxuwurif.mywebcommunity.org/x_ray_circuit_diagram_labeled.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414868/normal_60115d6203e31.pdfIn PDF document text
    • http://botanilix.mygamesonline.org/86422722888.pdfIn PDF document text
    • https://cdn.sqhk.co/kukisigafumi/giij9D4/93624944567.pdfIn PDF document text
    • https://viwobatenujaneg.weebly.com/uploads/1/3/4/4/134444739/2609701.pdfIn PDF document text
    • http://dokakepitizix.medianewsonline.com/market_segmentation_targeting_and_positioning_examples.pdfIn PDF document text
    • http://vipadobotisituz.mygamesonline.org/bitwise_operators_in_c_with_example_programs.pdfIn PDF document text
    • http://babitilakibo.mywebcommunity.org/xamotaxiwugupejoz.pdfIn PDF document text
    • https://cdn.sqhk.co/bikulatitaxe/hiUfLhg/facebook_messenger_video_mac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403681/normal_5fc8434a77f49.pdfIn PDF document text
    • http://boforotaje.mywebcommunity.org/subway_map_nyc.pdfIn PDF document text
    • https://cdn.sqhk.co/gisepavuv/oNhdu7P/ancient_roman_empire_youtube.pdfIn PDF document text
    • http://tujemet.scienceontheweb.net/57791437201.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wavexijazibivat.myartsonline.com/foundations_of_earth_science_8th_edition_answer_key.pdfIn PDF document text
    • http://domebiwek.myartsonline.com/microwave_diathermy.pdfIn PDF document text
    • http://rawigukegopafot.onlinewebshop.net/selututigej.pdfIn PDF document text
    • http://ginowane.onlinewebshop.net/weweg.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_off0000ea7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7C 5304 bytes
SHA-256: bb5fe72c2ac53143442b978620703ec8d6cdabada902ae09eb314a7aaaf9d298
font_01_sfnt_off0000fc80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC80 10648 bytes
SHA-256: cdd7f6bebf45ead717c3af1954384021f203fd34d520b452b2866bfbf2d82771