Malicious PDF — malware analysis report

Static analysis result for SHA-256 a70319f405468be1…

MALICIOUS

PDF

45.3 KB Authoring application: Nitro PDF
MD5: 2aa579f2ee861c33214d363d62c6b9dd SHA-1: 3274b90d3f207165f4d5fd1ba5bb0e10dcef12a2 SHA-256: a70319f405468be14febc51a2a9c28bf7b361f51678b618ba009965d617534b3
130 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many with numeric slugs, indicating a link farm designed to distribute malicious PDFs. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malware distribution intent. The document body, though heavily obfuscated, contains references to 'Oxford collocations dictionary' which may serve as a lure.

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://donotdemonetize.com/uploads/1/3/0/3/130312916/fojazelepuw-malakek-jubuje-ferese.pdf
    • http://philipejike.com/uploads/1/3/0/5/130588964/9300741.pdf
    • http://colonialcpchurch.org/uploads/1/3/0/7/130775627/31834c3df.pdf
    • http://tappchicago.com/uploads/1/3/0/6/130620506/susipedovakedulube.pdf
    • http://dynamicathleticcenter.com/uploads/1/3/0/8/130814803/zeniw.pdf
    • http://jackbrucker.net/uploads/1/3/0/4/130483765/3399072.pdf
    • http://israeling.net/uploads/1/3/0/4/130483279/merokudibuxofo_vibuxeb_rerujerokexa.pdf
    • http://cab42.com/uploads/1/3/0/6/130603828/e3aa0abb782e.pdf
    • http://michaelsell.net/uploads/1/3/0/6/130620402/f7ba8afa812c8c.pdf
    • http://mylawyerbevin.com/uploads/1/3/0/5/130540021/juzurajujiwukaz.pdf
    • http://aransasapparel.com/uploads/1/3/0/7/130776249/4607509.pdf
    • http://easycamconnect.com/uploads/1/3/0/4/130488252/5bfa40dd8.pdf
    • http://poolwell.com/uploads/1/3/0/5/130543074/2a8687c8df.pdf
    • http://koches.design/uploads/1/3/0/7/130775231/2855210.pdf
    • http://carolinaeast.ca/uploads/1/3/0/4/130488244/c16096125433438.pdf
    • http://wematterinc.com/uploads/1/3/0/6/130622011/feguzamiganazurijaku.pdf
    • http://grillou.fr/uploads/1/3/0/6/130639672/130639672.html#oxford+collocations+dictionary+for+students+of+english+pdf+free

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000040a6.bin
0fec520d00a0010bd10220e2b5e50a00918686724a73f084b7f7aab3ae37971f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x40A6 5520 bytes
font_01_sfnt_off000054f0.bin
ebee1ce6f63385e28e779458684b2b0afde0e17022df34ce87174fcd69da57ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x54F0 8228 bytes

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