Malicious PDF — malware analysis report

Static analysis result for SHA-256 451b991a23081ae6…

MALICIOUS

PDF

57.1 KB Authoring application: pstoedit First seen: 2020-09-07
MD5: aeac4404f9a6df630afd948d55a99fc9 SHA-1: a3f6c9b39e2eb2f8ed54f60df1056b4300ba8b0d SHA-256: 451b991a23081ae68ccda15e4679af281275e2a410956522539c3f6eba326300
152 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a large number of external links and a machine learning classifier indicating maliciousness. ClamAV also identified it as Pdf.Phishing.TtraffRobotInstall-7605656-0. The embedded URLs, such as http://principalwebmarketing.com/uploads/1/3/0/2/130289778/7385149.pdf, are likely part of a link farm designed to distribute malicious content or phish users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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 https://www.takshilalearning.com/pra In PDF document text
    • http://principalwebmarketing.com/uploads/1/3/0/2/130289778/7385149.pdfIn PDF document text
    • http://racersignitinghope.com/uploads/1/3/0/4/130493714/kujojejevati.pdfIn PDF document text
    • http://flintassociates.net/uploads/1/3/0/5/130588437/xiwoxusizesirotisu.pdfIn PDF document text
    • http://www.rubyjoybook.com/uploads/1/3/0/7/130775551/3915089.pdfIn PDF document text
    • http://randakksdevelopment.com/uploads/1/3/0/6/130639036/xegivokiguwevinoleve.pdfIn PDF document text
    • http://mrramsay.co.uk/uploads/1/3/0/7/130738714/nuribo.pdfIn PDF document text
    • http://saferescuefordogs.com/uploads/1/3/0/6/130640071/3175545.pdfIn PDF document text
    • http://www.crm.hamilkerrchallenge.com/uploads/1/3/0/2/130274376/fagider-mukorefena-vasido.pdfIn PDF document text
    • http://mrallenscience.com/uploads/1/3/0/6/130621337/gipovazedaf_nafovik_lufoxuzenibu.pdfIn PDF document text
    • http://www.elliottestes2017.com/uploads/1/3/0/9/130969421/9853936.pdfIn PDF document text
    • http://mlsweettreats.com/uploads/1/3/0/5/130589101/dajibivuzaxu-zebunizodasazex-tivasezutazipeg.pdfIn PDF document text
    • http://saltcityvolleyball.com/uploads/1/3/0/5/130540928/gitipepa-jiweru.pdfIn PDF document text
    • http://nikkiwetherellcounseling.com/uploads/1/3/0/3/130323764/megajewu-jizinadoma-govujekajogawu.pdfIn PDF document text
    • http://avikat.com/uploads/1/3/0/7/130776328/1011372.pdfIn PDF document text
    • http://www.bikehirehuntervalley.com/uploads/1/3/0/5/130551164/f4bf16e124751.pdfIn PDF document text
    • http://www.thirdcoastvisuals.com/uploads/1/3/0/6/130604322/00c5c.pdfIn PDF document text
    • http://mackenzieemievents.com/uploads/1/3/0/7/130775403/3460228.pdfIn PDF document text
    • http://fostersplacedover.com/uploads/1/3/0/6/130604320/660679.pdfIn PDF document text
    • http://fifthwoman.com/uploads/1/3/0/6/130620987/nugopixiwezud-wuworeno-relixowagetam-sufeni.pdfIn PDF document text
    • http://noosateardropflags.com/uploads/1/3/0/4/130476940/mudedovujejun.pdfIn PDF document text
    • http://xmeow.org/uploads/1/3/0/5/130550854/8590781.pdfIn PDF document text
    • http://artcenterla.org/uploads/1/3/0/7/130738764/benuxogujiridatebu.pdfIn PDF document text
    • http://smallbusinesswebdesign.company/uploads/1/3/0/6/130621333/genokodebi.pdfIn PDF document text
    • http://ciggysound.com/uploads/1/3/0/8/130874389/130874389.html#adjective+worksheet+for+class+2+in+hindiIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4609 1388 bytes
SHA-256: 1723f1ced37cc89d69e30f3df6281c5e5fb8989544fd4587aa75b00c91af2fd0
font_01_sfnt_off00005000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5000 16284 bytes
SHA-256: 66297a23c17319279b15a3f0c0281d5b48f2c04581d435979067380738894cd4
font_02_sfnt_off00007d5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D5F 7856 bytes
SHA-256: 746b7eed6a20b12ed7d0287609fabbc1c2f753a3e0cdec52dbc07d8d4a6adb5f

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