Malicious PDF — malware analysis report

Static analysis result for SHA-256 45161bb9ee4e8296…

MALICIOUS

PDF

37.1 KB Created: 2020-06-03 08:43:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fa1143ade38a548831adbdb2184cd30c SHA-1: d79e0d4f57e70714c9db7138e662d70289ffafb5 SHA-256: 45161bb9ee4e82968d2ea82aecece4e5c9502b30753ecf3b9213606450cfda54
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous external links, many of which are numerically or generically named, suggesting a link farm or SEO poisoning tactic. The document body mentions 'Elegoo super starter kit' and includes metadata from wkhtmltopdf, indicating it was likely generated to appear as a product page or related document. The primary intent appears to be directing users to potentially malicious or phishing websites hosted on domains like theharpoons.com and webmail.abcwithd.com.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://theharpoons.com/uploads/1/3/0/5/130551475/130551475.html#elegoo+super+starter+kit
    • http://webmail.abcwithd.com/uploads/1/3/0/6/130604074/16ce3ee9637a789.pdf
    • http://loveinkonline.com/uploads/1/3/0/5/130539004/569a08dc5ea.pdf
    • http://triplelunagoddess.com/uploads/1/3/1/4/131409597/xerulirinuse-dewov.pdf
    • http://auntbeeshouse.com/uploads/1/3/0/5/130551739/kamubap-jomenare-fipetibise.pdf
    • http://richfitkc.com/uploads/1/3/0/7/130738929/tidej.pdf
    • http://utzschneiderrunning.com/uploads/1/3/0/2/130272955/8957110.pdf
    • http://theharpoons.com/uploads/1/3/0/5/130551475/terms.html
    • http://theharpoons.com/uploads/1/3/0/5/130551475/dmca.html
    • http://theharpoons.com/uploads/1/3/0/5/130551475/policy.html
    • http://theharpoons.com/uploads/1/3/0/5
    • https://sudevoxe.files.wordpress.com/2020/05/suzebuxekopipipibanupilo.pdf
    • https://kemekakusava.files.wordpress.com/2020/05/pixutikavelozu.pdf
    • https://gubibegal.files.wordpress.com/2020/05/gegogukasisif.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_off0000644d.bin
57e47a7853cfdd7323711212b9b5a80494977e3beffb016bb185932cf956ba82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x644D 11892 bytes

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