Malicious PDF — malware analysis report

Static analysis result for SHA-256 a00cd5a55f8ffb96…

MALICIOUS

PDF

37.4 KB Authoring application: OpenOffice.org
MD5: 73f62bc22873a65e0ef5a49a1bbcabfb SHA-1: 18a80cfe9773767a4d41281c0945b4d368a61237 SHA-256: a00cd5a55f8ffb966dc3176963e31f6ce2c80157d587e191d53d532b9cda6044
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection of Pdf.Phishing.TtraffRobotInstall-7605656-0 further suggests a phishing or malicious distribution intent. The document body, though containing some garbled text, mentions 'Data engineer cv template', which could be a lure. The primary attack pattern involves redirecting users to a multitude of PDF files hosted on various domains.

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://coppiceandcanvas.com/uploads/1/3/0/4/130436095/wubiva.pdf
    • http://allbacksosteo.com/uploads/1/3/0/3/130323522/9654088.pdf
    • http://nzgirls.org/uploads/1/3/0/6/130621958/6558225.pdf
    • http://northcoastwalkingtours.com/uploads/1/3/0/6/130605164/2264696.pdf
    • http://wholereflections.com/uploads/1/3/0/3/130313370/805927.pdf
    • http://xuximef.nevaergomebel.ru/uploads/2020/01/29/xokabobew.pdf
    • http://mysteryshoppingonlinejob.com/uploads/1/3/0/6/130620537/defedisonusoxedoseso.pdf
    • http://npcpasolutions.com/uploads/1/3/0/4/130489159/68bbc97ab0f.pdf
    • http://buysellvancouverhome.com/uploads/1/3/0/6/130639526/5454258.pdf
    • http://lieronblogs.com/uploads/1/3/0/2/130270914/gepifotofumur_guwofamezu_gogidukuxepaxo.pdf
    • http://christinetschida.com/uploads/1/3/0/2/130289565/gegirema_wufifoxogar_nutavubuxudige_zekagikoxubama.pdf
    • http://mhr-international.eu/uploads/1/3/0/6/130605505/fe5d9af.pdf
    • http://biblewordstudy.org/uploads/1/3/0/2/130288926/kugoloxojelider_tusolafadeloz_pejolu_rukugom.pdf
    • http://djspizza1.com/uploads/1/3/0/3/130312913/130312913.html#data+engineer+cv+template

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013d8.bin
86f35e66ab9e3e3a21053fef607a8f669557ddca62f203333c07b699e8e03ec0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13D8 8668 bytes

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