Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcbe6e81cfda67c6…

MALICIOUS

PDF

55.1 KB Created: 2020-07-27 18:53:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c6660b3b30ad0589eb84fae338ef8e0 SHA-1: 081555b1373df374adbb0bc96206c585afc6342e SHA-256: bcbe6e81cfda67c6e243d76a522529f559721e9778124306005fc0d11b29a3d6
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a link to a redirector URL, which is a common tactic for delivering malicious payloads. The document body, though heavily obfuscated, appears to be a lure for a movie download, aligning with the 'SE_DOWNLOAD_BUTTON' heuristic. The presence of numerous external PDF links suggests a link farm used for SEO poisoning or traffic redirection. The primary malicious URL identified is ttraff.cc.

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.cc/pify?keyword=bhagam+bhag+full+movie++720p+worldfree4u
    • http://files.sathiavanee-veeramoothoo.com/uploads/1/3/1/8/131871891/jidutemepupaz.pdf
    • http://files.magnusfriberg.com/uploads/1/3/1/8/131856333/8048243.pdf
    • http://files.mathgeekroadshow.com/uploads/1/3/1/4/131438423/detupevowemepob.pdf
    • http://files.vintageinfused.net/uploads/1/3/0/7/130775645/5a21a.pdf
    • http://files.vintageinfuse
    • https://cdn.shopify.com/s/files/1/0429/1385/7692/files/suporigasotabugoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/buxetetobukenojulu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1451/9966/files/35257598261.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1623/files/vapederuwejawux.pdf
    • https://cdn.shopify.com/s/files/1/0428/5513/7447/files/53768214694.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/peregomosurexezobosezob.pdf
    • https://cdn.shopify.com/s/files/1/0431/2586/6662/files/41205120085.pdf
    • https://cdn.shopify.com/s/files/1/0433/7503/4520/files/42714158860.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6166/files/33784864889.pdf
    • https://cdn.shopify.com/s/files/1/0430/5184/3737/files/32802619821.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007ecf.bin
573a8d128b2679e4eb17d84ce993275eec333987bb350eb92422df597268e245
pdf-font-stream PDF embedded font (sfnt) at offset 0x7ECF 5756 bytes
font_01_sfnt_off00009287.bin
4dd7dca412e9a34fe1bfa780286a4f7f0303a35a636260e684604d1518e6bcf1
pdf-font-stream PDF embedded font (sfnt) at offset 0x9287 11452 bytes
font_02_sfnt_off0000b999.bin
c6d177dd30d395e9060e148723578c55e109ed4275642439632739a62bb8e54c
pdf-font-stream PDF embedded font (sfnt) at offset 0xB999 16104 bytes