Malicious PDF — malware analysis report

Static analysis result for SHA-256 b77b27687c20544c…

MALICIOUS

PDF

68.6 KB Authoring application: SWFTools
MD5: 86e963eb4bed312a14c87aebacd34ce2 SHA-1: 64aaad2d64118fad24398f06db5708f44d68155a SHA-256: b77b27687c20544cc8bdb3be56d8d40e1bc3c8419a4ec5cec27ac2a5fc45f128
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, containing numerous embedded URLs pointing to other PDF documents. This technique is often used for SEO manipulation or to distribute malicious payloads. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a malicious intent, likely related to phishing or traffic redirection. No scripts were extracted from this sample, and the document body was heavily obfuscated.

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://www.dreamboxrecords.com/uploads/1/3/0/2/130272603/mevov.pdf
    • http://www.beiliglas.co.uk/uploads/1/3/0/2/130270993/2bf6f94.pdf
    • http://uniquelydzigned.studio/uploads/1/3/0/5/130541904/9427271.pdf
    • http://kidkazoo.net/uploads/1/3/0/6/130605124/lejonuwakesuwu.pdf
    • http://veticusllc.com/uploads/1/3/0/6/130639976/sakovij-fimil-lapuge.pdf
    • http://addaihealthedu.net/uploads/1/3/0/4/130483236/fifufeturobovomila.pdf
    • http://anantam.com/uploads/1/3/0/7/130775265/reweb.pdf
    • http://benjamingreenimages.com/uploads/1/3/0/9/130969704/b80659cd4a35da.pdf
    • http://desotomethodistchurch.com/uploads/1/3/0/5/130589244/8726338.pdf
    • http://paskes.com/uploads/1/3/0/6/130605325/dekeginixug.pdf
    • http://kramerlawfirm.net/uploads/1/3/0/6/130639593/5484492.pdf
    • http://hooklinelunkers.com/uploads/1/3/0/6/130639294/xigefero.pdf
    • http://yumishop.vip/uploads/1/3/0/5/130551302/wemavuxiloma-vejido-fetebokesuwuzo.pdf
    • http://andrewwarnerdogtraining.com/uploads/1/3/0/6/130604498/puzelokab-wixokab.pdf
    • http://spencerbarnor.com/uploads/1/3/0/5/130540869/6975918.pdf
    • http://hostmaster.cardiffnaturalburials.co.uk/uploads/1/3/0/8/130874667/e146441c1a97063.pdf
    • http://mingrentang.bpmtc.com/uploads/1/3/0/9/130969437/130969437.html#ielts+speaking+actual+tests+%28sep+%E2%80%93+dec+2019%29

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000b300.bin
7c629782b1a605abb63e87f4136c68bef8d52e05daff32b9e3464f1c3f3ad508		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB300 25196 bytes
font_00_sfnt_off00001480.bin
d1de885b6f9b888a9431eaf732c2d5a467a0354d5b5d62235c06087b1840e0c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1480 8144 bytes

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