Malicious PDF — malware analysis report

Static analysis result for SHA-256 f783a0ba66af9e71…

MALICIOUS

PDF

57.1 KB Authoring application: LibreOffice Draw
MD5: 7a7785fbad770dfc93a028ae76635289 SHA-1: a0a6a7c6a526dccc8e33e792c91c9a13561d34e2 SHA-256: f783a0ba66af9e71eef1cc6119a84e6cae0b0a74b3c685251e09e4fffadb5744
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents. This is indicative of a link farm, often used for SEO manipulation or to distribute malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent. No scripts were extracted from this sample, and the document body was heavily obfuscated, limiting further analysis of the specific lure.

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 https://rulowifapovik.weebly.com/uploads/1/3/0/6/130604512/vibofuladaguzapiva.pdf
    • http://alpharetirementplan.com/uploads/1/3/0/6/130639861/1162492.pdf
    • http://adriftwoodworks.com/uploads/1/3/0/6/130620505/562513.pdf
    • http://alabamafanaticon.com/uploads/1/3/0/4/130475992/lexigizivu_xotajoli_vilagiwejoti.pdf
    • http://alcoprofi.com/uploads/2020/01/28/mewumedukuper.pdf
    • http://sepuwid.arbitech.pro/uploads/2020/01/27/8140767.pdf
    • http://observationsandconclusions.com/uploads/1/3/0/3/130323097/kagatokiparo-firunagawaraga-daganilotu.pdf
    • http://telenovelasgratis.biz/uploads/2020/01/28/2002287.pdf
    • https://bimixixuno.weebly.com/uploads/1/3/0/5/130551226/6974981.pdf
    • http://miniturecowboysrus.com/uploads/1/3/0/4/130476102/tudajazogugiza.pdf
    • http://bellinghamchildlife.weebly.com/uploads/1/3/0/5/130588478/2279135.pdf
    • http://tafi.domgleden-nn.icu/uploads/2020/01/28/c0de3f6ec2f7f.pdf
    • http://myowild.net/uploads/1/3/0/2/130271087/b73fdc92424.pdf
    • http://adriftwoodworks.com/uploads/1/3/0/2/130272648/85ad7a2b1.pdf
    • http://thestudyhouse.org/uploads/1/3/0/5/130588987/xedek.pdf
    • http://thevintagefarmhousemarket.com/uploads/1/3/0/4/130489152/xapol_pibej_gorimasurur.pdf
    • http://cfomtg.com/uploads/1/3/0/5/130588723/dcf5f6d.pdf
    • http://modernstepsnaples.weebly.com/uploads/1/3/0/4/130483242/be88bafa6c75.pdf
    • http://dropdeadgorgeousbybrittany.com/uploads/1/3/0/6/130639876/nexiwaragixanik.pdf
    • http://dijo.calmlike.com/uploads/2020/01/28/mewomosutadil_teduxegu.pdf
    • http://adoptme.info/uploads/1/3/0/6/130605432/130605432.html#yajur+veda+in+gujarati+pdf
    • http://dijo.calmlike.com/uploads/2020/01/28

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001830.bin
aab182bc50b797e95e93771c07e7570bbcd008c95316f0d96740a944974ec5b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1830 9804 bytes
font_01_sfnt_off00007f84.bin
0f656d154c5d73af7433414f04fc54e5b39641d30ad529dde5ca8229ae456640		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F84 17280 bytes

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