Malicious PDF — malware analysis report

Static analysis result for SHA-256 34c32025e2c37613…

MALICIOUS

PDF

48.6 KB Authoring application: Karbon
MD5: ee2fdf14cbfe8bc3d2b58dc6172f90a2 SHA-1: 3b31c8677e4491083e8261c246583ca61aaea882 SHA-256: 34c32025e2c37613e524c6acabb5cd2a61f7c5f31aa5a38e3cfd9f53928c3b5a
150 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and a machine learning classifier indicated a high probability of maliciousness. The critical heuristic 'PDF_SEO_LINK_FARM' indicates the presence of numerous external PDF links, with the first identified URL being http://rachaelmaephotography.com/uploads/1/3/0/7/130739814/godumupi-kofadikon.pdf. This suggests the document's primary purpose is to act as a lure, redirecting users to a network of other malicious PDF files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://rachaelmaephotography.com/uploads/1/3/0/7/130739814/godumupi-kofadikon.pdf
    • http://us-arabchamber.org/uploads/1/3/0/5/130589241/d791c5eea4b747.pdf
    • http://compassionatelivingcourse.com/uploads/1/3/0/4/130476204/1419765.pdf
    • http://mealkitmama.com/uploads/1/3/0/5/130588787/zexejiraweneg.pdf
    • http://birdhousepdx.com/uploads/1/3/0/7/130738720/ab1f37810a5bba2.pdf
    • http://norwichmonument.com/uploads/1/3/0/6/130620482/96a1e0f4a1d294.pdf
    • http://treeservicetravelersrest.com/uploads/1/3/0/3/130324136/purovu.pdf
    • http://pcfenceco.com/uploads/1/3/0/7/130738646/tenedobetis.pdf
    • http://mox-vr.com/uploads/1/3/0/4/130483983/99beadd126.pdf
    • http://jimandcarolgarlow.com/uploads/1/3/0/7/130739986/989e8c08e.pdf
    • http://musicalmonday.org/uploads/1/3/0/5/130543538/3259873.pdf
    • http://hotelpetsolutions.net/uploads/1/3/0/6/130620482/1450902.pdf
    • http://circoestodo.org/uploads/1/3/0/6/130605040/e6f604117.pdf
    • http://newchancedetox.com/uploads/1/3/0/4/130436207/bafemudo-rubatul.pdf
    • http://cambiatucasa.com/uploads/1/3/0/7/130776599/5198235.pdf
    • http://caribbeanshadeproducts.com/uploads/1/3/0/5/130543010/boguzaxajonu.pdf
    • http://millerblade.com/uploads/1/3/0/5/130551208/gopewaru.pdf
    • http://darkmediaguy.com/uploads/1/3/0/6/130621462/4128840.pdf
    • http://chinese.genderinsanity.com/uploads/1/3/0/8/130874403/nerilopik.pdf
    • http://joyfullnight.com/uploads/1/3/0/6/130621665/e85a4a1e66fa.pdf
    • http://nelsonbaypreschool.com/uploads/1/3/0/3/130323220/pesume_zaziva_vaxidiji_dibalij.pdf
    • http://organicbundle.com/uploads/1/3/0/5/130539875/9941625.pdf
    • http://joseon.net/uploads/1/3/0/5/130538838/nupalomerujegas.pdf
    • http://bernardobellostudio.com/uploads/1/3/0/7/130740456/130740456.html#section+11%284%29+of+arbitration+and+conciliation+act

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000115b.bin
50c6c1582a5f44978bb7845db6ad0df9a246ad879d63f073e7a079819723eae7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x115B 8060 bytes

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