Malicious PDF — malware analysis report

Static analysis result for SHA-256 73fa81c0f3848eca…

MALICIOUS

PDF

69.1 KB Created: 2021-02-17 07:52:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1bec093b76e3e57792c220a9adc519a8 SHA-1: c74c2fbeb91948a2b5226763a16809a0346499b4 SHA-256: 73fa81c0f3848eca122467c73b5bdd9540fa0e92d51f0c827ee11b72df816fce
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://baarspo.ru/wix?keyword=parallel+space+apk+download+iphone PDF link annotation
    • http://xelipev.22web.org/rurikaporagubu.pdfIn PDF document text
    • https://fosevikotik.weebly.com/uploads/1/3/1/6/131637163/e45dc4c70.pdfIn PDF document text
    • http://remigajapalogu.22web.org/47771857150.pdfIn PDF document text
    • https://mepodatadun.weebly.com/uploads/1/3/1/4/131452799/8115076.pdfIn PDF document text
    • http://pimadukemaxi.22web.org/desh_basito_song_english.pdfIn PDF document text
    • https://cdn.sqhk.co/lazujanaziri/dfouFgg/kudarikonavuninikagamo.pdfIn PDF document text
    • http://fopafinegetob.iblogger.org/rijid.pdfIn PDF document text
    • https://punujagenak.weebly.com/uploads/1/3/0/7/130775029/ac0ffb6.pdfIn PDF document text
    • https://cdn.sqhk.co/bezizafosu/gugeLic/lodixe.pdfIn PDF document text
    • https://cdn.sqhk.co/zosiwikiw/SgiAhju/perfect_kick_2_apk_mod.pdfIn PDF document text
    • https://nufewaxitobazat.weebly.com/uploads/1/3/4/7/134748461/c3446dcb1c.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/ragejufa/84636032948.pdfIn PDF document text
    • http://nelasuvujosigow.rf.gd/22089772047.pdfIn PDF document text
    • http://bekelogamaju.rf.gd/kahoot_hack_apk_ios.pdfIn PDF document text
    • http://rubukemudug.rf.gd/71977283956.pdfIn PDF document text
    • http://tifomoja.epizy.com/bootloader_android_samsung.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/asphalt_7_full_apk_data.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/lupudodegixaxurolinixe.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_off0000d237.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD237 5320 bytes
SHA-256: 3d567845271c0e78754e78ceed75b7d894f24da137a8cff11ebb52814febfc65
font_01_sfnt_off0000e454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE454 10284 bytes
SHA-256: 98e85f8342492f5114dd8111de8ea22eb33e758448208e2b8ecbc2f9a09ffcfc