Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b268a5274dc88af…

MALICIOUS

PDF

42.4 KB Authoring application: Inkscape First seen: 2021-06-04
MD5: e7494c9ef11af1f94ea68c8f4710cafb SHA-1: 4e102849f0ee3ebbae64582753fcbf75c0790a56 SHA-256: 6b268a5274dc88af1bb81e48dce35545f36df4bb35d7347a2296295fb5c65f05
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files hosted on Weebly, indicating a link farm or a distribution mechanism for further malicious content. ClamAV detected this as Pdf.Phishing.TtraffRobotInstall, and a machine learning classifier also flagged it as malicious. The embedded URLs are the primary IOCs, suggesting a phishing or spam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://rokukuzakukol.weebly.com/uploads/1/3/0/4/130489398/vulavepemarid.pdf In PDF document text
    • https://lotomaronakewat.weebly.com/uploads/1/3/0/4/130488241/986372.pdfIn PDF document text
    • https://mojijaxo.weebly.com/uploads/1/3/0/3/130323559/5221349.pdfIn PDF document text
    • https://nuvesefasupev.weebly.com/uploads/1/3/0/4/130488891/8934d037d.pdfIn PDF document text
    • https://bodinadalo.weebly.com/uploads/1/3/0/3/130323155/nagisufuj_bifetijobufubo_zokef.pdfIn PDF document text
    • https://pisewimolula.weebly.com/uploads/1/3/0/5/130543063/fudusotepare.pdfIn PDF document text
    • https://sixumelilixuke.weebly.com/uploads/1/3/0/4/130477009/debawewuvaluvat.pdfIn PDF document text
    • https://porixosujasi.weebly.com/uploads/1/3/0/5/130551287/xawaxalabezudulusaju.pdfIn PDF document text
    • https://bigonerafi.weebly.com/uploads/1/3/0/4/130483232/aa743634612.pdfIn PDF document text
    • https://damikefuzaboju.weebly.com/uploads/1/3/0/2/130272856/571d70.pdfIn PDF document text
    • https://gaxitiwugukoker.weebly.com/uploads/1/3/0/2/130271087/4432c4f6f9.pdfIn PDF document text
    • https://zovifojiw.weebly.com/uploads/1/3/0/3/130324030/44b72bc0b31.pdfIn PDF document text
    • https://dovifoxajizav.weebly.com/uploads/1/3/0/3/130323092/76e1f04e513.pdfIn PDF document text
    • https://durobumifep.weebly.com/uploads/1/3/0/2/130287871/zisixuxidebafib.pdfIn PDF document text
    • https://mesewaxizababu.weebly.com/uploads/1/3/0/2/130287936/130287936.html#brucellosis+in+cattleIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000134d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134D 7952 bytes
SHA-256: b0295cfd496b0098a5ac8262d481b994fce8f865c032c576e027a68445ebd467
font_01_sfnt_off00005dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFD 16268 bytes
SHA-256: 5d7ebd720715cd86529581f1d40cc643f68465477bd430d4be5ff736bc95f798

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