Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ba676a5141eacd8…

MALICIOUS

PDF

81.5 KB Created: 2021-03-24 02:49:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 289264f88434e2f291c59fc0b778d2e4 SHA-1: 453ed4db5494af1ddc25214115727ff283c23e44 SHA-256: 1ba676a5141eacd824ffc0532757c2fe990b2b31f3d33c1dbc3dee3445791c88
134 Risk Score

Malware Insights

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

The PDF document is flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristic 'SE_INVOICE_LURE' suggests a phishing or scam pretext, further supported by the embedded URLs pointing to domains often associated with malware distribution. The document's content, though heavily obfuscated, appears to be a lure for a business plan template, aiming to trick users into clicking on the numerous external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://maypoin.ru/123?utm_term=sample+small+business+plan+template PDF link annotation
    • http://nubolats.xyz/guitar_scales_for_beginnersvoz8u.pdfIn PDF document text
    • http://tryse.xyz/boom_beach_mod_apk_new_version_201837aof.pdfIn PDF document text
    • http://raisinshub.pro/foxobowokodubodotezvw5z.pdfIn PDF document text
    • https://jadufebifov.weebly.com/uploads/1/3/4/6/134627690/3396713.pdfIn PDF document text
    • http://istlan.fun/exploratory_multivariate_analysis_by_example_using_r_chapman_and_halla5ue6.pdfIn PDF document text
    • https://masezinonorokun.weebly.com/uploads/1/3/4/6/134685416/3935914.pdfIn PDF document text
    • https://ponosozuvovisu.weebly.com/uploads/1/3/4/6/134668850/05e1c8b69129.pdfIn PDF document text
    • https://zamosokajuzosa.weebly.com/uploads/1/3/4/6/134651904/9442638.pdfIn PDF document text
    • http://ketrovk.xyz/bollywood_movie_filmypur._commtd38.pdfIn PDF document text
    • https://gigawixirebasig.weebly.com/uploads/1/3/1/8/131857482/gipidizuradezorumifa.pdfIn PDF document text
    • http://qunit.space/lediludijofirebavukezaj34xk.pdfIn PDF document text
    • http://creditactive.info/10047322002iuss2.pdfIn PDF document text
    • https://balolenitazir.weebly.com/uploads/1/3/1/0/131071159/9f5d6b77e0.pdfIn PDF document text
    • https://gubojipupulep.weebly.com/uploads/1/3/4/3/134359502/6324486.pdfIn PDF document text
    • https://zapineri.weebly.com/uploads/1/3/4/7/134707132/776205.pdfIn PDF document text
    • https://semototip.weebly.com/uploads/1/3/5/3/135386148/kifunodaxuzuzepu.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/mipizaju/blocs_2_templates.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee27fbf9-6c57-4b5e-88e1-dd07ef336db8/10097879268.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/494a0ea6-4b7b-452e-b229-6b87d2890a07/does_xfinity_offer_a_dvr.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b91efa49-b269-4591-969a-81c9769d4bb7/how_to_create_a_bump_map_in_gimp.pdfIn PDF document text
    • https://s3.amazonaws.com/pugomonapoxuxe/40550567884.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_off0001015e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1015E 5112 bytes
SHA-256: cc12ba25e02736281d1bbb94896981b1fdf5acb12c13caf9008a61c9db72008e
font_01_sfnt_off000112a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112A9 11168 bytes
SHA-256: 748ff7c8815438d17c74d6b8594deee6d226753ac92fd69c934c98385e2ba61d

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