Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bb3ae87caef5756…

MALICIOUS

PDF

41.7 KB Authoring application: Nitro PDF
MD5: feb132854529a49047a578c2c7192b82 SHA-1: a93c12ec2b337fdfa10532614ba53fd1f3316fe0 SHA-256: 7bb3ae87caef57564116a9051fae77115dba1f2b7a1214ceb8d6cf6679423933
120 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a link farm, with numerous embedded URLs pointing to other PDF files. This technique is often used to manipulate search engine rankings or to host malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the malicious intent. No scripts were extracted from this sample.

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://amandaporterfield.com/uploads/1/3/0/7/130739530/9519140.pdf
    • http://fencingaberdeen.com/uploads/1/3/0/2/130274316/e009ca96ffd285f.pdf
    • http://airwavescable.com/uploads/1/3/0/3/130323568/fbf18770f7.pdf
    • http://littower.com/uploads/1/3/0/3/130323522/regodu.pdf
    • http://sheryloleen.com/uploads/1/3/0/3/130313215/6308010.pdf
    • http://informatisphere.com/uploads/1/3/0/5/130539935/sikaxukinilarokafa.pdf
    • http://www.louloulearning.com/uploads/1/3/0/7/130775998/ab166.pdf
    • http://www.wakefieldmiddleschoolpta.org/uploads/1/3/0/6/130621951/mekoruguviv_lipupalasevete_rexud_debavar.pdf
    • http://fnvv.com/uploads/1/3/0/5/130551526/cddf75.pdf
    • http://karenscraftroom.com/uploads/1/3/0/5/130588473/mekamugifosuna.pdf
    • http://bambringo.com/uploads/1/3/0/6/130604319/644abac0ca31e40.pdf
    • http://arkveterinaryurgentcare.com/uploads/1/3/0/6/130620882/piselomaxireg_xusibevovipor_rabafol.pdf
    • http://seedtoatree.com/uploads/1/3/0/6/130639689/f1f000507.pdf
    • http://www.makarrgarma.org/uploads/1/3/0/5/130551898/248c446.pdf
    • http://alwaysgq.net/uploads/1/3/0/6/130604312/8560686.pdf
    • http://www.thepourspout.com/uploads/1/3/0/2/130289502/e6b73.pdf
    • http://sanfranciscopeacetreaty.org/uploads/1/3/0/2/130270777/130270777.html#arturia+keylab+88+mk2
    • http://amandaporterfield.com/uploads/1/3/0/7/13073

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000467d.bin
c96ff18c7fd01d17bcbae54c0f39140cb3980d19218a567eeeb26e5df6ed5abe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x467D 8352 bytes

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