Malicious PDF — malware analysis report

Static analysis result for SHA-256 75ab63ae164968c0…

MALICIOUS

PDF

68.6 KB Created: 2021-04-02 01:01:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: efb2deb180129091d0b11f8eab1da8ec SHA-1: 28b9c384a51cf796965e45ee2012836237a0f0b5 SHA-256: 75ab63ae164968c0a837a7eef3115041244a648458d7094c9e94d8745921a214
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one heuristic specifically identifying a 'PDF_SEO_LINK_FARM' indicating a large number of outbound links. The document body, though partially garbled, references a popular song title, suggesting a lure to attract users. The presence of external URIs and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicate a malicious intent, likely for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://lozipotod.ru/123?utm_term=bekhayali+song+dhvani+bhanushali++video
    • https://furureseseruwa.weebly.com/uploads/1/3/4/4/134481841/sinodupanemutub.pdf
    • https://kudilasiwutoxe.weebly.com/uploads/1/3/5/3/135314551/sageropewaza-tijiwad-konot-tasuz.pdf
    • https://wubepifumemav.weebly.com/uploads/1/3/4/1/134109226/7092680.pdf
    • https://rulotukipaka.weebly.com/uploads/1/3/0/7/130776525/e9af33d.pdf
    • https://sejerujezoxovod.weebly.com/uploads/1/3/1/3/131398555/waxodizi-tikuvizipimopu-komimameroman.pdf
    • https://rijagadufe.weebly.com/uploads/1/3/1/6/131606992/c63c51.pdf
    • https://dawopodesolapip.weebly.com/uploads/1/3/5/3/135327749/fc6aa1f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://5e6d3f51-9b35-4a29-baf4-1f036254a461.filesusr.com/ugd/99a8f2_7b4a30211f1747048509306711d45cf8.pdf?index=true
    • https://uploads.strikinglycdn.com/files/15dba0c1-ec89-4b7d-b60b-c17307146fc7/88132295521.pdf
    • https://s3.amazonaws.com/gotenukevepunin/lizefabonemelar.pdf
    • https://s3.amazonaws.com/bipovoromoj/zokew.pdf
    • https://uploads.strikinglycdn.com/files/aacd1381-e495-464f-9adb-e21d3a0be4d0/kuduwaripowodopatowesel.pdf
    • https://uploads.strikinglycdn.com/files/4fb2e709-5752-44be-8ec7-79903b0eff98/71759082378.pdf
    • https://uploads.strikinglycdn.com/files/8ada3d54-d0e2-4abf-aadf-64d7b7105259/3346349076.pdf
    • https://s3.amazonaws.com/widuxade/52971074075.pdf
    • https://uploads.strikinglycdn.com/files/3605812b-6720-47ed-beb9-4aec0910ed2c/gozavif.pdf
    • https://uploads.strikinglycdn.com/files/e88960bc-b689-4979-beb0-921469832829/black_and_decker_electric_string_trimmer_manual.pdf
    • https://uploads.strikinglycdn.com/files/fe73ac86-3071-4d6e-9057-9bd79b10c2b9/shimano_alfine_8_speed_service.pdf
    • https://s3.amazonaws.com/wuvepilamamuse/66920227000.pdf
    • https://uploads.strikinglycdn.com/files/1f1a3045-ee72-4b05-8b68-a6ef042ed05c/how_to_calibrate_lifesource_ua-767.pdf
    • https://8c56b32b-3398-45d6-9c0b-b55146621f16.filesusr.com/ugd/6924eb_4c98ca48a3184206a30926db83bc11d7.pdf?index=true
    • https://484a0fbd-04e0-416f-b335-41eb3f66808b.filesusr.com/ugd/228afb_efe15e6943d146a287363138784d0bfe.pdf?index=true
    • https://uploads.strikinglycdn.com/files/84b0ca83-9a74-4e1a-b9f8-35f95d256f32/jutexikobiwononafinazi.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_off0000cfa1.bin
3b0d144d4e1e5bcb8700802181d087e0c20d875bbff3f23cf1faf739a9e3f467		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCFA1 5408 bytes
font_01_sfnt_off0000e219.bin
f91d03f5c40e7e50e83e64e4987603aef5fc6ad298a28fecfb8ff0f110f61fc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE219 10116 bytes

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