Malicious PDF — malware analysis report

Static analysis result for SHA-256 27594719401154ce…

MALICIOUS

PDF

31.6 KB Created: 2020-06-14 23:45:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e278dc993a206fe74b7ac6dee88f2b50 SHA-1: 0fd7c4d0eaa8f570ebb7fca08a76038d5088798d SHA-256: 27594719401154ce34ef7c55e0f838e36c6cbb25d2e6ac0532bdfd46ed61fe61
72 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used in SEO link farms to manipulate search engine rankings or to distribute malicious content. The presence of a 'download button' heuristic further suggests a deceptive intent. The document body is heavily obfuscated, but the embedded URLs indicate a pattern of linking to potentially malicious PDF files hosted on various domains.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://mypsychopharmacology.com/uploads/1/3/0/7/130776405/130776405.html#ente+teacher+pdf
    • http://babygreyclementine.com/uploads/1/3/0/6/130604359/kozidinudupex.pdf
    • http://avaluo.digital/uploads/1/3/1/3/131381044/vavolixadituvilabo.pdf
    • http://74-123-77-89.mgwnet.com/uploads/1/3/0/4/130490245/944ba8a63a792aa.pdf
    • http://micropluscomputers.co.uk/uploads/1/3/0/4/130476045/5b8d62f194a9.pdf
    • http://toadandpickle.com/uploads/1/3/0/6/130621312/duwalububa_tunuzewor_nidawotu.pdf
    • https://gadewovog.files.wordpress.com/2020/06/tegivuxagurogasevisux.pdf
    • https://lasogotunule.files.wordpress.com/2020/06/70449148394.pdf
    • https://bemurates.files.wordpress.com/2020/06/leralafafem.pdf
    • https://kudosemuzuna.files.wordpress.com/2020/06/vuguridiximodalo.pdf
    • https://niteperozis.files.wordpress.com/2020/06/12239426780.pdf
    • https://feguxatejixe.files.wordpress.com/2020/06/54782542549.pdf
    • https://lojemaj.files.wordpress.com/2020/06/vuzodunufuvojediz.pdf
    • https://wilotulu78917961.files.wordpress.com/2020/06/80360312400.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_off00004f67.bin
bafffc7a884266dcc4219543a36a71ef9eafc9e31a37c0b508101d6254a5e995		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F67 10664 bytes

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