Malicious PDF — malware analysis report

Static analysis result for SHA-256 babbab32c9e247f7…

MALICIOUS

PDF

43.4 KB Created: 2020-11-07 21:41:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: c7296339a9a939b61f01124c4092b4c7 SHA-1: 18b4b4a48adfac83b7290af70e9a7baa2f0470f0 SHA-256: babbab32c9e247f7787523e7fb8d6bd88060feadd2b7c5a97fced210de1e46e2
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links, many hosted on disposable domains, indicative of a link farm designed to generate traffic or SEO benefits. The 'SE_ADVANCE_FEE_SCAM_LURE' heuristic strongly suggests the document's content is intended to deceive users into believing they will receive a prize or parcel, a common tactic in advance-fee fraud. The embedded URL and the numerous other links point to malicious infrastructure.

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.
  • 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.
  • 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.
  • 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://traffine.ru/123?keyword=tesla+tech+package PDF link annotation
    • https://sizojupitad.weebly.com/uploads/1/3/4/3/134332657/bad5f72fe88c891.pdfIn PDF document text
    • https://jopalezaleloloj.weebly.com/uploads/1/3/1/3/131380469/7073083.pdfIn PDF document text
    • https://redunexodozik.weebly.com/uploads/1/3/0/8/130814050/tusomufexovimow.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/6023986.pdfIn PDF document text
    • https://dedofuzogod.weebly.com/uploads/1/3/4/3/134374436/xawazabasavux_vivanibekomu.pdfIn PDF document text
    • https://toziraza.weebly.com/uploads/1/3/4/5/134506396/556350.pdfIn PDF document text
    • https://juwimifabofif.weebly.com/uploads/1/3/4/3/134369341/889319.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/toguvaju/servidores_emule_2020.pdfIn PDF document text
    • https://zugibiraw.files.wordpress.com/2020/11/manual_programacion_android_espaol.pdfIn PDF document text
    • https://mefufigas.files.wordpress.com/2020/11/sovoxafusarejuderokuvoneg.pdfIn PDF document text
    • https://misizimafijo.files.wordpress.com/2020/11/bk_precision_lcr_meter_880_manual.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_off00006995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6995 5112 bytes
SHA-256: 5f957578ad692a7f896423e71a2c3fcd3c47a690e2361791f16813c23db61d88
font_01_sfnt_off00007afd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFD 11200 bytes
SHA-256: c3e5c3516d62c548e47e017a0fa924636070e6cb7bb525e59b6d48b2b024fc80

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