Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fa9cb2b452fb85c…

MALICIOUS

PDF

97.8 KB Created: 2021-03-24 06:10:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3469c28977457ba6a003767e9b21febc SHA-1: bc376b974af0d996ae782de3cba4d740dc9abb8e SHA-256: 0fa9cb2b452fb85c6ba15e0ec0d9bffcee3e641092285a81b202d2f113770f8a
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, with the ClamAV detection name indicating it is a phishing trojan. The document contains an embedded URI pointing to a suspicious domain, which is likely intended to redirect the user to a malicious site. No scripts were extracted, but the presence of embedded URIs and the overall detection suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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://xezojetit.ru/aws?utm_term=coaster+brake+hub+disassembly
    • https://static.s123-cdn-static.com/uploads/4388833/normal_5fcaf6e81261f.pdf
    • https://zasubimivari.weebly.com/uploads/1/3/1/3/131383839/3102910.pdf
    • https://guvorike.weebly.com/uploads/1/3/4/2/134266232/0601a77faf.pdf
    • http://temilops.xyz/batusosuvitupiterepeliv20g3.pdf
    • http://giwitijudaleka.mygamesonline.org/hp_probook_4530s_price_philippines.pdf
    • http://bagesopabiwub.scienceontheweb.net/lesco_48_walk_behind_mower_parts_manual.pdf
    • http://scrlt.xyz/21936231502znl7f.pdf
    • https://static.s123-cdn-static.com/uploads/4495849/normal_5fcd73661905f.pdf
    • http://nuwojukow.mygamesonline.org/bcg_matrix_example_coca_cola.pdf
    • https://lelamezabam.weebly.com/uploads/1/3/5/3/135314793/folaguwumukiselabo.pdf
    • https://static.s123-cdn-static.com/uploads/4460968/normal_5fc6b9c63b596.pdf
    • http://rexevivejegox.scienceontheweb.net/malovobokinamifewapudid.pdf
    • https://relujebaxarun.weebly.com/uploads/1/3/1/1/131164257/f331d409990.pdf
    • https://static.s123-cdn-static.com/uploads/4387826/normal_5fc9b302117bc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/daselex/weweguwiv.pdf
    • https://uploads.strikinglycdn.com/files/de1f222a-edd6-4bfd-8423-ae738c83a7c9/vedapudobanopediv.pdf
    • https://s3.amazonaws.com/palikuvexake/86635019113.pdf
    • http://ziwivazud.onlinewebshop.net/37699809652.pdf
    • https://uploads.strikinglycdn.com/files/d395cbb9-1081-42ad-8c9f-21c4ea36d136/ipod_nano_7th_gen_tech_specs.pdf
    • https://s3.amazonaws.com/leteraxewe/meeting_invite_template_sample_outlook.pdf
    • https://s3.amazonaws.com/netinuwa/ruzakuzefale.pdf
    • https://uploads.strikinglycdn.com/files/abccf23a-9393-43d0-ab7a-f9d978daa4e8/kinetico_water_softener_meridian_idaho.pdf
    • https://uploads.strikinglycdn.com/files/b96056b2-9772-4541-9189-c675ff40e816/vilusaviwujajefo.pdf
    • https://s3.amazonaws.com/kugelilizibuwum/vufiminanatabawumalevu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014231.bin
b6dbadc47b6343a4cb021542996992cda40420bed0f2bd4ee920c12c56c2ae3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14231 5276 bytes
font_01_sfnt_off000153f6.bin
3fe7ef8718de429028dc32c8acc20621cd87c2044e68bb7e792dccee7c38257c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x153F6 11088 bytes

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