Malicious PDF — malware analysis report

Static analysis result for SHA-256 df7126f06d113766…

MALICIOUS

PDF

51.7 KB Created: 2020-11-05 23:33:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 7fb175c90ec536edb0441bb36a14fa57 SHA-1: 698edf0dbfada8ba283a8537b4011c971b9f823c SHA-256: df7126f06d113766fe20b85aa6012f861cd51d2f35bcc60a07aa6633affee8b1
146 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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://traffset.ru/aws?keyword=chase+credit+card+foreign+travel+notification PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378152/normal_5f8a8e0dede46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371025/normal_5f8fcc89cc495.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/gifavexosubuduxene.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368249/normal_5f88874b271ef.pdfIn PDF document text
    • https://varipejat.weebly.com/uploads/1/3/0/7/130739080/noropata.pdfIn PDF document text
    • https://rirubonoji.weebly.com/uploads/1/3/4/5/134528367/wijafexolap.pdfIn PDF document text
    • https://firerokuk.weebly.com/uploads/1/3/1/1/131164187/1a17a8284e5af3b.pdfIn PDF document text
    • https://rudofodirofebas.weebly.com/uploads/1/3/0/7/130739781/mabiraj.pdfIn PDF document text
    • https://mesumubanok.weebly.com/uploads/1/3/4/5/134507600/7527299.pdfIn PDF document text
    • https://mamexobupelo.weebly.com/uploads/1/3/1/3/131383482/najanotosola_jedilukimo_muluviveburi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0480/1547/4847/files/87965397394.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/como_citar_bibliografia_apa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8797/7366/files/watch_series_online_better_call_saul.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/how_to_search_a_scanned_document.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67A5 5156 bytes
SHA-256: f974400dcf7056b400026e32305269594f65b8437b0f63dd862cff68e9b1d384
font_01_sfnt_off0000792d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x792D 10524 bytes
SHA-256: 99c3786679915acd802d4d913037a23eb67758c7d1533100077b47cf578a3f10
font_02_sfnt_off00009d44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D44 16312 bytes
SHA-256: b2563e85233037e3c2780690ed1455257f868516b5a962e54e6ffe29314c9cb1
font_03_sfnt_off0000b2cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2CF 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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