Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e44e28ca2fd9388…

MALICIOUS

PDF

46.4 KB Authoring application: Poppler-utils
MD5: eafa765349b7d0d3855f313869e49353 SHA-1: d6952b2a1b2adf85d1e4ed669f34d896ec5ef801 SHA-256: 1e44e28ca2fd93882a50e6e346aa049168acc84f2efb9296b46e38f6dfa428f5
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, while containing some text about art, also includes a significant number of these malicious URLs, reinforcing the attack pattern. The primary goal appears to be directing users to a network of linked PDFs, likely for SEO spam or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://ganu.imperium.bz/uploads/2020/01/27/mabemuj_futoxep_sagar_jovorij.pdf
    • http://nuguwo.copyrightcontact-1000032019.info/uploads/2020/01/27/9819360.pdf
    • http://lujatatibe.kupitzerkalo.ru/uploads/2020/01/27/gufeganotuwoj-bojowudulukugog-pasav-vesov.pdf
    • http://nix-dns-oldi.info/uploads/2020/01/27/8386768.pdf
    • http://fobezuba.gatsbydoubler.icu/uploads/2020/01/28/pawajufew.pdf
    • http://bevu.veramebel.ru/uploads/2020/01/27/lebota_rumarozam_lexoxivutovene_mofaf.pdf
    • http://pweuxk.xyz/uploads/2020/01/27/jutiketu_zamiguri.pdf
    • http://ledi.graphicgeekworld.online/uploads/2020/01/28/6868957.pdf
    • http://equilibrium-psyche.ru/uploads/2020/01/28/sezizosewikuzi.pdf
    • http://zese.gris1.com/uploads/2020/01/27/d18f46da.pdf
    • http://zaxu.militaryfreak.com/uploads/2020/01/27/rusijikuzaroxawoxog.pdf
    • http://kujutizav.megatest.org/uploads/2020/01/27/noxiti_tujak.pdf
    • https://dufirijewezewug.weebly.com/uploads/1/3/0/3/130380002/bivoraseg_xuxurozomib_xotogojixezu_mosokepapoxuz.pdf
    • http://megu.calmlike.com/uploads/2020/01/27/taxukafepu.pdf
    • http://finaze.wesharehk.com/uploads/2020/01/27/wivokab.pdf
    • http://pob.gruzodelov.ru/uploads/2020/01/27/8505141.pdf
    • http://fixodu.mbsmun.site/uploads/2020/01/27/6272855.pdf
    • http://tavor.deepspect.com/uploads/2020/01/28/vijaf.pdf
    • http://xuluketex.bestqick.net/uploads/2020/01/27/mekojosinejeza.pdf
    • http://familiarizarse.info/uploads/860393.html#a+history+of+art+in+africa+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015e2.bin
a30bd181f8bf186c22be87afb830f01fa75e95055f0eb0eccb39f0065ec5eab4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15E2 8136 bytes

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