Malicious PDF — malware analysis report

Static analysis result for SHA-256 559287f117b0d761…

MALICIOUS

PDF

90.0 KB Created: 2020-11-21 23:49:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f8fd29fc867a627070d04bc28065879 SHA-1: 1e2aca4fe6c4d88e7e8f6eb19d82e881b40878bc SHA-256: 559287f117b0d761e75b5abcbec8ffac33cbd26cd0fb55e10388bf1e26bba89e
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure and a link farm, indicating a phishing or scam attempt. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests an advance-fee fraud scheme. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://gettraff.ru/aws?utm_term=information+about+indian+scientist+in+marathi+language
    • https://sijerixo.weebly.com/uploads/1/3/4/0/134042725/vinigigebaralepexew.pdf
    • https://selamosufuk.weebly.com/uploads/1/3/4/4/134463567/pusomi.pdf
    • https://tonurokekar.weebly.com/uploads/1/3/4/4/134456200/virarer_napaxovuv.pdf
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/xewonanek.pdf
    • https://fejegexe.weebly.com/uploads/1/3/4/6/134617501/9050492.pdf
    • https://vobemebu.weebly.com/uploads/1/3/4/3/134383317/a7427082746fc47.pdf
    • https://fitisasituwag.weebly.com/uploads/1/3/4/8/134846324/ridotefakuseri.pdf
    • https://talinupujisen.weebly.com/uploads/1/3/4/5/134591269/7187042.pdf
    • https://kekulewu.weebly.com/uploads/1/3/4/3/134398637/591562.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/47707efe-ed99-4079-bbfe-b77f19106fca/tuduwaravifopegaxus.pdf
    • https://uploads.strikinglycdn.com/files/eda52057-bb51-46d4-bc9f-74efc05a27d5/sergio_pinto_martins_direito_do_trabalho.pdf
    • https://uploads.strikinglycdn.com/files/4d7fbc1b-901a-4fa1-9f7f-8b14e30d2945/gta_sa_cheat_menu_download.pdf
    • https://uploads.strikinglycdn.com/files/e3e6aa29-b984-457c-86f4-d400b5fc890a/77554379233.pdf
    • https://uploads.strikinglycdn.com/files/5873ea38-a278-4ef5-a8d7-01908aa39b3b/bugopat.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011353.bin
5e52ca58163aafbd214b5a169f023dcef0182e5e02cd9712dfd43220fc36c77f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11353 5396 bytes
font_01_sfnt_off0001256d.bin
3aae3d7076c23076c0b06d50fb444106bd11563fbc1c6e324cc87b8c42800faf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1256D 11540 bytes
font_02_sfnt_off00014c29.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14C29 4324 bytes

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