Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bf76b03e3a69f47…

MALICIOUS

PDF

52.7 KB Created: 2020-03-16 14:15:35 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: fed4c445ca52eb22c433b34d8764fd16 SHA-1: 8ea158d7b408cd1cdcf0f3e4ef9b550dbfc3e5d5 SHA-256: 6bf76b03e3a69f47b164d553f8e2c6263970c1eef30eab80c435fb9c37fefc34
136 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, identified as a link farm, and is flagged as a classic advance-fee fraud lure. The document body, though partially obfuscated, contains text related to soundbar connectivity and also includes URLs, suggesting the user is intended to click these links for further fraudulent engagement. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.
  • 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 http://rightandleft.net/uploads/1/3/0/4/130483728/130483728.html#lg+sound+bar+connect+to+tv+wireless
    • http://salonsirena.com/uploads/1/3/0/2/130289693/d08af0d6be.pdf
    • http://adsl-66-121-174-46.encorp.net/uploads/1/3/0/6/130605212/7554058.pdf
    • http://doterrafirma.com/uploads/1/3/0/3/130379326/towukuxowuno-zafuzekoxogeza-bizozu.pdf
    • http://charlieleegeorge.com/uploads/1/3/0/6/130604102/4635a92633.pdf
    • http://74-123-75-33.mgwnet.com/uploads/1/3/0/5/130547689/1949600.pdf
    • http://usanewbiology.com/uploads/1/3/0/4/130483142/zupav.pdf
    • http://dogoody.com/uploads/1/3/0/4/130483631/2406424.pdf
    • http://fuzzymoon.org/uploads/1/3/0/4/130435821/dagejojad.pdf
    • http://liz-accounting.com/uploads/1/3/0/8/130813786/9637910.pdf
    • http://www.jillkrasnerart.com/uploads/1/3/0/7/130775098/6dab61e32e30.pdf
    • http://imgbasic.com/uploads/1/3/0/6/130621714/28c39.pdf
    • http://tattletalesboutique.com/uploads/1/3/0/2/130271212/1749405.pdf
    • http://lyp88.net/uploads/1/3/0/4/130477363/e9f6e649345.pdf
    • http://www.blinkdesign.co.nz/uploads/1/3/0/6/130604045/fowozegeti_suritaje_xetodobawuwo_vajomaz.pdf
    • http://nuvisionconstruction.com/uploads/1/3/0/8/130814311/246ae311.pdf
    • http://tagteamenterprisesllc.com/uploads/1/3/0/7/130775347/34441.pdf
    • http://opsmobilelearning.com/uploads/1/3/0/3/130379311/xaxofatodaw_gumutugigenu_ninivav_lofitojodalovi.pdf
    • http://mmalonecelebrantservices.online/uploads/1/3/0/5/130540453/mesuf_gofujifajil_sagefamitefovo.pdf
    • http://www.myfriendsandfamilyshop.com/uploads/1/3/0/2/130289532/nefolowuki-gofarivutab-lidatobaxo-xudesaxuviroz.pdf
    • http://www.punkrockdeals.com/uploads/1/3/0/3/130379252/werawi.pdf
    • http://dev.thecedars.ca/uploads/1/3/0/4/130483583/3907154.pdf
    • http://caddycapdesigns.com/uploads/1/3/0/8/130874358/binagiwomudujofaruxe.pdf
    • http://irfa3.net/uploads/1/3/0/9/130969465/4972664.pdf
    • http://carrfirm.com/uploads/1/3/0/6/130639407/suxokof_jopuj.pdf
    • http://localprintshop.com/uploads/1/3/0/2/130289668/494bd7beb4009e0.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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a2f5.bin
733078d15ebb2f2a66675294ed3059e7bd3b849aefaa7ff8b112f1229a2eea40		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2F5 8848 bytes

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