Malicious PDF — malware analysis report

Static analysis result for SHA-256 54fd82bd5583ec56…

MALICIOUS

PDF

44.5 KB Authoring application: Pdftk
MD5: 8666e1427d1f6b2586991e6e1eb3310b SHA-1: bb0ba423f787c6d3074d5760e010ae8847847f7a SHA-256: 54fd82bd5583ec563a9ce382dd064fc3ee116197aa30d34ef6352c5cfd4de063
128 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDF files, indicating a link farm designed for SEO manipulation or to distribute further malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the presence of a visual download button further support a phishing or malicious download lure. The embedded URLs are the primary indicators of compromise.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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
  • 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://miiasoey.com/uploads/1/3/0/3/130313634/lajowisek.pdf
    • http://lamplepost.com/uploads/1/3/0/2/130291551/bdb5dac.pdf
    • http://ctkyakima.com/uploads/1/3/0/4/130477864/wutifusufowuf_vasunigabe.pdf
    • http://paradigmfactory.com/uploads/1/3/0/6/130640094/savazuwo.pdf
    • http://mycpmc.com/uploads/1/3/0/4/130483869/18e69f37.pdf
    • http://rogujawelo.50lutions.net/uploads/2020/01/28/8265900.pdf
    • http://bullfrogimaging.com/uploads/1/3/0/5/130543798/be140be0a4b.pdf
    • http://vsetoplivo.ru/uploads/2020/01/28/dcafd79fd.pdf
    • http://serenielle.com/uploads/1/3/0/4/130435532/vonarod.pdf
    • http://comfycabinfamily.com/uploads/1/3/0/6/130620813/xijuxab_jadorowot_jukuwojop_sazuwumiveminen.pdf
    • http://policetrailer.com/uploads/1/3/0/6/130639215/130639215.html#pc+browser+max+app

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000126c.bin
4f95d16ed58cab9973e4db1f2df768aef3b1e09d2b1d99e9d01e3a9a20932afd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x126C 8728 bytes

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