Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2be17d95022e740…

MALICIOUS

PDF

38.0 KB Authoring application: pstoedit
MD5: 09be1e3b01a92de42ec2fb1ad2b672b9 SHA-1: 04334f9599575dfb04a4f27cf9dc6020554a4ba4 SHA-256: d2be17d95022e740e456324fe8eac2553d982da3c2988cf4a2f7d91012d998f0
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic and ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The ML classifier also strongly flagged this file as malicious. No scripts were extracted, and the document body content is heavily corrupted.

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://cubeexchange.com/uploads/1/3/0/5/130542870/554a7387.pdf
    • http://ps110k.com/uploads/1/3/0/7/130739073/e76220.pdf
    • http://drakephotografx.net/uploads/1/3/0/8/130814351/wuxowakidu.pdf
    • http://www.thehungerisreal.com/uploads/1/3/0/5/130544811/4043581b.pdf
    • http://radioclarendon.com/uploads/1/3/0/5/130544385/nopafixebanuku.pdf
    • http://abundantlivingbytyrolea.com/uploads/1/3/0/6/130605279/f0460e34b1a829.pdf
    • http://jocumriobranco.org/uploads/1/3/0/3/130323697/7d351901e.pdf
    • http://partisanrecords.net/uploads/1/3/0/5/130589274/nusizosum_guvozasivuxakew_morafemanire_kamimubixav.pdf
    • http://primaris.net/uploads/1/3/0/3/130324419/muwedafedizonojudapa.pdf
    • http://nationalassetretrievalservices.com/uploads/1/3/0/5/130551684/nelenik_lenanemoje.pdf
    • http://sbfbla.org/uploads/1/3/0/7/130775432/kudikubogidim-keluxutuxunivo-demiredijide.pdf
    • http://mrsac.net/uploads/1/3/0/5/130551559/2035179.pdf
    • http://exocognitive.com/uploads/1/3/0/8/130814858/jigezudumefik_gulenuji_jiwez.pdf
    • http://mailinbackup1.visitpresov.com/uploads/1/3/0/7/130775154/lekadida.pdf
    • http://internalware.com/uploads/1/3/0/6/130639712/lituzuwabo.pdf
    • http://pharrfamilychiropractic.com/uploads/1/3/0/3/130379634/fapitoni.pdf
    • http://commercialcompliance.com/uploads/1/3/0/5/130540401/8932789.pdf
    • http://southerncottongoldenretrievers.com/uploads/1/3/0/8/130813369/liviwevukat_dutizoregog_zujizutid.pdf
    • http://derekfordportfolioshsu.com/uploads/1/3/0/2/130289226/bajaje-jajipovesepu-femusoxoxup.pdf
    • http://remarkhmc.com/uploads/1/3/0/7/130775590/motiwozatararefezag.pdf
    • http://michellewellingtonphotography.com/uploads/1/3/0/7/130739557/gegetetojunijivufosu.pdf
    • http://estradatransport.com/uploads/1/3/0/6/130621719/8751607.pdf
    • http://mrcarpentermath.com/uploads/1/3/0/3/130323630/nedegulezesa_nimum.pdf
    • http://www.chotchkiss.com/uploads/1/3/0/5/130539735/lafifedirusago-mitamam-rajomufodafol-temox.pdf
    • http://scottschablow.com/uploads/1/3/0/4/130435570/sajapafilazuletagu.pdf
    • http://x0041974xstreamtravel.xsideas.com/uploads/1/3/0/4/130493476/130493476.html#low+abdominal+cramps+in+second+trimester
    • http://southerncottongoldenretrievers.com/uploads/1/3/0/8/130813369/liviwevukat_dutizorego

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030d4.bin
0b2a3926d33ceb273b420de39fd038c46a505bf2b0196d942db9050e54189a89
pdf-font-stream PDF embedded font (sfnt) at offset 0x30D4 7432 bytes