Malicious PDF — malware analysis report

Static analysis result for SHA-256 18f806f2e57a7cb2…

MALICIOUS

PDF

66.3 KB Authoring application: Karbon
MD5: abc684f51c67bddaeefd9b10bd3e72d8 SHA-1: e708f21b66bbc62b451aa2b8c6ed9c8f124e1a37 SHA-256: 18f806f2e57a7cb2d3e07a6cb4b59b22d7b6e9b41a00f8c87c3784dd9488fe29
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. The document contains a large number of embedded URLs pointing to other PDF files, suggesting a tactic to distribute content or host malicious payloads. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://cloudclickr.com/uploads/1/3/0/5/130589353/7094742.pdf
    • http://casualshift.com/uploads/1/3/0/7/130776073/9909092.pdf
    • http://margozhiznevskaya.com/uploads/1/3/0/4/130483871/tutuxa-mawapatunuje-wijulogepuxija.pdf
    • http://mysteryplus.nl/uploads/1/3/0/6/130620892/e8f554023de3c1b.pdf
    • http://mta-sts.mail.travevolution.com/uploads/1/3/0/3/130313524/3160632.pdf
    • http://tnonestopshop.com/uploads/1/3/0/2/130288554/e90a134.pdf
    • http://second-childhood.com/uploads/1/3/0/6/130621333/wixugafesubawimoxumi.pdf
    • http://dsproducties.nl/uploads/1/3/0/5/130544321/kosogetusowivos_tovune_ritomirofonorew_wuzisexo.pdf
    • http://www.jhanselcustomdesigns.com/uploads/1/3/0/7/130739475/kofegadorojuw.pdf
    • http://197cedarrock.com/uploads/1/3/0/8/130813821/8732360.pdf
    • http://motheringmama.com/uploads/1/3/0/3/130313090/6560587.pdf
    • http://mail.eeainusa.com/uploads/1/3/0/4/130436166/mubanozine_muxovifujuje_pabuwifoxus_juvuruxizip.pdf
    • http://thebravesboard.com/uploads/1/3/0/5/130589133/724f0589.pdf
    • http://musicmash.ca/uploads/1/3/0/4/130476412/wopogiguziwob-jiwatujunivi-sunemapibezej-bivogowi.pdf
    • http://apkzebra.com/uploads/1/3/0/5/130590159/4f7560e52.pdf
    • http://tampa321sold.com/uploads/1/3/0/7/130740616/wapanuwifodaj.pdf
    • http://brownsugarbabyllc.com/uploads/1/3/0/4/130435755/d4440.pdf
    • http://platosretreat.net/uploads/1/3/0/7/130776699/zepelefivakul.pdf
    • http://10dayfilm.org/uploads/1/3/0/6/130604575/2857570.pdf
    • http://mountaingalsbookkeeping.com/uploads/1/3/0/5/130550667/c4ee7a7.pdf
    • http://beastfriendz.com/uploads/1/3/0/5/130550997/8475140.pdf
    • http://coloradoartclass.org/uploads/1/3/0/6/130621384/molopo-winosedipiguxuj-sunin-janesulaxake.pdf
    • http://modimody.com/uploads/1/3/0/3/130379482/kureze_varivovuwege_vofapobapeke_gakotemimuge.pdf
    • http://eastcoastnpl.org/uploads/1/3/0/4/130483656/xidokibomunatajujag.pdf
    • http://carlosdia.com/uploads/1/3/0/4/130477414/130477414.html#beta+adrenergic+agonist+medications

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001e86.bin
bab3a166f6d04669c7c00347d13c76ca32ecd97597ff74473bab84585aa74a4f
pdf-font-stream PDF embedded font (sfnt) at offset 0x1E86 7684 bytes