Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f7d9767e94aa6fc…

MALICIOUS

PDF

45.6 KB Authoring application: Nitro PDF
MD5: 47dfe2ffc5120b27fa1541ea558a732d SHA-1: d41cd2ee7e4410c0e31991018472082457c09281 SHA-256: 8f7d9767e94aa6fc50d2f11157085fea27a778720b9799e126c0e3ce7ea1431f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links to external PDF files 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. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious distribution intent. No scripts were extracted from this sample, limiting the ability to detail specific execution chains.

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://sunnybottom.com/uploads/1/3/0/2/130273790/c926304f.pdf
    • http://villamklima.com/uploads/1/3/0/3/130323271/jevuregesij_fokovadubufaxu_natupetuses_nigazobu.pdf
    • http://artists.edgic.eu/uploads/1/3/0/5/130588473/8844897.pdf
    • http://mjvsms.ca/uploads/1/3/0/3/130323997/kapowuduwipajumidox.pdf
    • http://yourdedicatedtravelagent.com/uploads/1/3/0/6/130605036/sitolagavuwus.pdf
    • http://katiemallen.com/uploads/1/3/0/6/130603753/sobevomedijutelogisu.pdf
    • http://manhatta2021.com/uploads/1/3/0/5/130539437/tekejivezekimu.pdf
    • http://computertutorialsonline.com/uploads/1/3/0/7/130776714/b74e42.pdf
    • http://atsservices.org/uploads/1/3/0/6/130640088/2983284.pdf
    • http://carminarevert.xyz/uploads/1/3/0/6/130639712/7266397.pdf
    • http://mail.stwtalent.com/uploads/1/3/0/6/130605107/sirujifixuvaz_pupukoroxeraju_sovatazewij_zafapuk.pdf
    • http://riveterservices.com/uploads/1/3/0/3/130313305/8941e767ca2f5.pdf
    • http://brockmalinowski.com/uploads/1/3/0/3/130313141/7696724.pdf
    • http://www.jennymacdadeart.com/uploads/1/3/0/6/130621901/8aeb09.pdf
    • http://nordicxenia.com/uploads/1/3/0/7/130739824/vugevulapojosopi.pdf
    • http://www.abcwestcorkhoney.com/uploads/1/3/0/7/130775127/6562236.pdf
    • http://csraisc2.com/uploads/1/3/0/6/130604024/6642068.pdf
    • http://thelevelupshow.com/uploads/1/3/0/6/130620736/lojetinoxeselow_vujadabowop.pdf
    • http://marmarworld.com/uploads/1/3/0/7/130776452/130776452.html#bacaan+surah+yasin+dalam+bahasa+indonesia

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_001_off000034b3.bin
f876d83536598d78a555726b894c2f4358a142513236d238602e9399f197d357		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34B3 19336 bytes
font_01_sfnt_off00005572.bin
610f7cae776916478983c19b7e79a752c45cd96981808c14046d6a77b0279727		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5572 7676 bytes

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