Malicious PDF — malware analysis report

Static analysis result for SHA-256 03b905ba1fe8f10f…

MALICIOUS

PDF

42.8 KB Authoring application: Pdftk
MD5: 9a4d1adb752b69f12c7e7dc276b722e7 SHA-1: 9a4984c3f7bede5d2688d342842e491802d83358 SHA-256: 03b905ba1fe8f10f846793f6db43c09ebcfec08859052e70efa08190694a5bb9
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier also indicate maliciousness, with ClamAV specifically identifying it as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The embedded URLs are likely used to distribute further malicious content or for SEO spamming.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://lamariposatexas.com/uploads/1/3/0/6/130639972/vezemu-babiniva-jigitisota-vogipew.pdf
    • http://jafim.audiostart50.icu/uploads/2020/01/29/626677.pdf
    • http://texegul.archisidek.com/uploads/2020/01/27/gevuxoveva-gofet.pdf
    • http://luwived.ceodentvicalvaro.com/uploads/2020/01/29/kexeti.pdf
    • http://lujeme.veredas.online/uploads/2020/01/28/tedemuzaja-sunopewi.pdf
    • http://ncsccalgary.weebly.com/uploads/1/3/0/6/130639603/zanavafopopa.pdf
    • http://landoninlondon.com/uploads/1/3/0/6/130605381/c0564.pdf
    • https://lugopebozit.weebly.com/uploads/1/3/0/6/130603744/3709b926.pdf
    • http://terraeuropa.net/uploads/2020/01/28/30644dab469be66.pdf
    • http://southerngirlcoffee.com/uploads/1/3/0/5/130588659/8366657.pdf
    • http://itraktor.ru/uploads/2020/01/27/66502b11c449.pdf
    • http://vutazeja.marcketplace.online/uploads/2020/01/28/16869b88d0b50c.pdf
    • http://ponyenzo.com/uploads/1/3/0/6/130621903/sazitupeko.pdf
    • http://gavirago.leks-dveri.ru/uploads/2020/01/27/4f878e.pdf
    • http://nuswindsymphony.weebly.com/uploads/1/3/0/6/130639725/4123b6ad58c3edb.pdf
    • https://regixidelikab.weebly.com/uploads/1/3/0/4/130478295/f570534b256.pdf
    • http://childrensliteratureassembly.com/uploads/1/3/0/2/130291707/3303339.pdf
    • http://empowereducon.com/uploads/1/3/0/5/130540085/9031321.pdf
    • http://lawuwexal.daewoo.fun/uploads/2020/01/27/farek.pdf
    • http://jetanafe.kanapes.net/uploads/2020/01/28/3334919.pdf
    • https://negalawoput.weebly.com/uploads/1/3/0/5/130551190/ledejosofapulilibe.pdf
    • http://amyhahne.com/uploads/1/3/0/3/130379675/tadiwudixefivologa.pdf
    • http://myentouragemusic.com/uploads/1/3/0/4/130492315/130492315.html#beautifulsoup4+tutorial+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000016a3.bin
46208e2049f890951073b0194127e8d1d4a3c5dfe955e3c532fa2e1de33def6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16A3 9168 bytes

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