Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1e2e2fb11cabcf4…

MALICIOUS

PDF

41.0 KB Authoring application: pstoedit
MD5: 3c2332776aa3d0095183b96424c5cffa SHA-1: 521227ae13b7cb195e7734aa8d8c73d8385f684f SHA-256: e1e2e2fb11cabcf42644caa4ba49a58c3e557af43287be9346d5c8aeefd0533c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF files across various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic and ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The document body itself contains seemingly random text related to chemical reactions, which is likely obfuscation or filler content. The primary attack pattern involves redirecting users to a multitude of external resources.

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://mikaelchalyce.com/uploads/1/3/0/5/130589218/6323293.pdf
    • http://mail.faithbiblecamp.com/uploads/1/3/0/7/130738830/d601601d2432.pdf
    • http://www.redfernmarketresearch.com/uploads/1/3/0/8/130813883/89a7f3e4d.pdf
    • http://commandertv.com/uploads/1/3/0/6/130603771/2507094.pdf
    • http://vyingwear.com/uploads/1/3/0/7/130739268/wowago-pidadokip-wokivitu-xejutiwosarowax.pdf
    • http://acupointgem.com/uploads/1/3/0/8/130814923/dejiwulubepeve-mukunupig.pdf
    • http://mail.mixing-mastering-online.com/uploads/1/3/0/6/130605324/7117657.pdf
    • http://chefjoseph.org/uploads/1/3/0/6/130620424/safux-xufenik-febejefapedib-subozaw.pdf
    • http://buyfantasticweed.com/uploads/1/3/0/2/130270895/jokogojagewa_vupape.pdf
    • http://myrole.finance/uploads/1/3/0/7/130775172/gifokaja-maburi-xazebazunuzosok-gisob.pdf
    • http://www.rahklan.com/uploads/1/3/0/2/130272390/45314ff.pdf
    • http://philadelphiaprek.com/uploads/1/3/0/7/130776264/9b1e510e010185.pdf
    • http://eaglehealthinsurance.com/uploads/1/3/0/8/130814058/185547e.pdf
    • http://temperamentsart.com/uploads/1/3/0/8/130874010/xibejapexojin_tedelimejaw_bobexokijid_texepusi.pdf
    • http://missinglinkbrewing.net/uploads/1/3/0/3/130313613/dewidabiwamefidijij.pdf
    • http://qkt6r.bpmtc.com/uploads/1/3/0/8/130814024/130814024.html#reaction+of+potassium+permanganate+with+oxalic+acid

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000374f.bin
095631f4d5bc1deda63ec6defd3bef1b93b96e4070e450930c8056b115a30bc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x374F 3052 bytes
font_01_sfnt_off0000442c.bin
65390a77ed7e5d82dc759e34efe9674125d668086954b3e3efe0b9b16f5eae28		 pdf-font-stream PDF embedded font (sfnt) at offset 0x442C 8296 bytes

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