Malicious PDF — malware analysis report

Static analysis result for SHA-256 133348aa7971a0b6…

MALICIOUS

PDF

34.9 KB Authoring application: LibreOffice Draw
MD5: 3944883e42bdc49327a4a53f884dfa9a SHA-1: 04ef367a5d2de233dcb53a9953342286b8b42dfc SHA-256: 133348aa7971a0b699580b81e2acf9701c0f35043eb2eb06b41719cf66dca3a2
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which strongly suggests a malicious intent to redirect users to external content. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the embedded URLs are the primary indicators of compromise, likely serving as a distribution point for further malicious content or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://fly-def.us/uploads/1/3/0/5/130589031/2bd7ef.pdf
    • https://bufupewofo.weebly.com/uploads/1/3/0/5/130543991/laruzuzunafe-menik-gumujexa.pdf
    • http://weku.bigdigitag.com/uploads/2020/01/28/vipapud_vitesigisomiz_zanufibugixarid.pdf
    • http://nirvanatails.biz/uploads/1/3/0/4/130436139/1383564.pdf
    • http://sasmitaworld.org/uploads/1/3/0/6/130603748/b0735c5.pdf
    • http://dohabodymassage.com/uploads/1/3/0/5/130588627/fisewovoxas.pdf
    • http://thealexispuhlick.com/uploads/1/3/0/2/130288410/5802627.pdf
    • https://lidevopa.weebly.com/uploads/1/3/0/5/130550961/216619df11cf.pdf
    • http://rebeccaoteylaw.com/uploads/1/3/0/2/130287547/bedip_dipageviki_vetezewexef_buguletes.pdf
    • http://nikowi.decodereadlearn.com/uploads/2020/01/28/xoxofafudaji-widododeteb.pdf
    • http://neighborhoodpetcareclinic.com/uploads/1/3/0/5/130550998/7770255.pdf
    • http://gikikibezu.8i1.com/uploads/2020/01/27/nipuguj.pdf
    • http://cornerstoneinsuranceservices.com/uploads/1/3/0/6/130605012/tuwili-wifigilipavube.pdf
    • http://ahmawanphotos.com/uploads/1/3/0/5/130542860/lewuvusa.pdf
    • http://mmsestatelettings.com/uploads/1/3/0/3/130379206/6c82d17.pdf
    • https://rosazelig.weebly.com/uploads/1/3/0/4/130488286/5601818.pdf
    • http://twoklassens.com/uploads/1/3/0/5/130588426/vaxuxej.pdf
    • https://muzawoxodinidu.weebly.com/uploads/1/3/0/3/130313049/fagirora.pdf
    • http://putibikope.kardio-control.ru/uploads/2020/01/27/latufazewaniz_levotomuvot.pdf
    • http://possumrungreenhouse.com/uploads/1/3/0/6/130620669/1329598.pdf
    • http://kevefipu.nickel-logine.com/uploads/2020/01/28/e9feab4a8823d09.pdf
    • http://mukepu.jobok.fun/uploads/2020/01/27/baxededowotopu.pdf
    • http://ukerepublic.shop/uploads/1/3/0/6/130603749/lufagufadamopen_kupemumisafodom_zuweregiteru_sosar.pdf
    • http://mrdombaza.com/uploads/1/3/0/3/130313013/3397766.pdf
    • http://rehphotography.org/uploads/1/3/0/6/130621418/130621418.html#html+page+to+pdf+using+fpdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000178e.bin
1d09d08bcb831a3171b3c0d2d5c7134f4cac6248798e94f3d35bf78eeeaeb7d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x178E 8012 bytes

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