Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3fc308dd929798f…

MALICIOUS

PDF

45.1 KB Authoring application: Nitro PDF
MD5: 616a7c50c5481cf0cdeac38e53fec4fd SHA-1: 0d02a4baaafae7dcd20a7dc2d2bce1887dd68d6a SHA-256: d3fc308dd929798ffe301e7894f1d354a142de531133c7d8d96f99f85291649e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a phishing or malware distribution campaign. The ClamAV detection further supports the malicious nature of the file. No scripts were extracted from this sample, and the document body content is heavily corrupted and unreadable.

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://hostmaster.inkcafe.com/uploads/1/3/0/4/130476034/815f951a6456c.pdf
    • http://www.emeraldsbeauty.com/uploads/1/3/0/6/130604359/pufowutu.pdf
    • http://littlebrasselephant.com/uploads/1/3/0/7/130740522/2329570.pdf
    • http://veraspencer.com/uploads/1/3/0/8/130874655/e6da6b63.pdf
    • http://back2hemp.com/uploads/1/3/0/7/130776886/2886086.pdf
    • http://clivemaddison.com/uploads/1/3/0/5/130539756/borufufobikik.pdf
    • http://scout-troop76.com/uploads/1/3/0/2/130289304/453667.pdf
    • http://airbrushinggourds.com/uploads/1/3/0/4/130477064/jezita.pdf
    • http://alicialamour.com/uploads/1/3/0/7/130739596/zudas-tumesusije-nosuwaxi.pdf
    • http://orockrotorua.co.nz/uploads/1/3/0/2/130291485/3784b10dc329.pdf
    • http://angryorange.us/uploads/1/3/0/5/130550817/mipabusori_boxegitu_keriguludojezu.pdf
    • http://www.ricabarrica.com/uploads/1/3/0/2/130289220/2682768.pdf
    • http://www.jessicaandtravis.com/uploads/1/3/0/6/130639805/a29c394513c.pdf
    • http://www.gotchuwhipd.com/uploads/1/3/0/5/130539128/706036.pdf
    • http://thambithomas.com/uploads/1/3/0/3/130313400/fesalerevalu_lojodoxa_sirudeju.pdf
    • http://danskasfalt.com/uploads/1/3/0/6/130639160/1058ae.pdf
    • http://www.musclegear-asia.com/uploads/1/3/0/4/130476086/8107b571.pdf
    • http://braunmaguirejewelers.com/uploads/1/3/0/6/130620927/582004.pdf
    • http://labreadesigns.com/uploads/1/3/0/2/130289597/6219430.pdf
    • http://3vgfj.bpmtc.com/uploads/1/3/0/7/130775865/130775865.html#acute+kidney+failure+prerenal
    • http://airbrushinggourds.com/uploads/1/3/0/4/1304770

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003b3f.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3B3F 16036 bytes
font_01_sfnt_off00005259.bin
118eca81d3dffbceb1eda708d231c75fc274d6cd7c97cd194241cab7be9b569a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5259 7832 bytes

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