Malicious PDF — malware analysis report

Static analysis result for SHA-256 6165f67269c90667…

MALICIOUS

PDF

75.8 KB Authoring application: Scribus
MD5: 25ae693f71f9a61e05e9f1866e956f76 SHA-1: ca24bfdedb2a3252d2e3cd9c9b819294012d79b6 SHA-256: 6165f67269c90667c2e659ea88a385604f010e9b4edcc21a05c79d256d576f75
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links to other PDF files, suggesting a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded URLs are the primary IOCs, pointing to potential second-stage payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://autoimmuneguru.com/uploads/1/3/0/4/130483617/wakususajomif_wevokojute_sibol_nugiradevi.pdf
    • http://4444ever.com/uploads/1/3/0/6/130640048/7d632df3.pdf
    • http://sophiesticated-travelstories.com/uploads/1/3/0/5/130588467/7924406.pdf
    • http://hostmaster.themightiestever.com/uploads/1/3/0/8/130874668/rexosi.pdf
    • http://theforexsquare.com/uploads/1/3/0/5/130544672/c548a7179a539.pdf
    • http://manuelcastro.com/uploads/1/3/0/5/130589031/dawuluxebuxun.pdf
    • http://retroproskc.com/uploads/1/3/0/7/130739747/3263266.pdf
    • http://yoginigirl.net/uploads/1/3/0/6/130621950/8605510.pdf
    • http://oppenheimerindustries.com/uploads/1/3/0/4/130483847/b4655148b6490.pdf
    • http://www.njlidercoaching.com/uploads/1/3/0/5/130590420/1586959.pdf
    • http://pressurecleanit.com/uploads/1/3/0/6/130605124/130605124.html#digestive+system+pdf+ncert+hindi
    • http://fedorahosted.org/lohit
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000099f6.bin
1723f1ced37cc89d69e30f3df6281c5e5fb8989544fd4587aa75b00c91af2fd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99F6 1388 bytes
font_01_sfnt_off0000a470.bin
d4c3564283a8f7cbf68bba2d83095f7cc885030265d39cb03f30a0db6552c848		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA470 18624 bytes
font_02_sfnt_off0000d68f.bin
8f1038213af4b5e9d25259f4a16ec434e8b995d39210f91fb12e7e036c7e4012		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD68F 7308 bytes

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