Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a76895604b21eee…

MALICIOUS

PDF

34.0 KB Created: 2020-08-06 17:13:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7752c2db895269b53e6922459ca40c29 SHA-1: eb17376a3ff4aaf7f0e649205f19674fa5f996f5 SHA-256: 3a76895604b21eee09b1b032cb3ce0df7462e60e3bdff15d6439fb06569b7a1a
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, pointing to 'https://ttraff.cc/pify?keyword=merge+pdf+online+free+unlimited'. Additionally, the 'PDF_SEO_LINK_FARM' heuristic indicates a large number of external links, suggesting a tactic to distribute malicious content or engage in SEO manipulation. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports the lure-based attack pattern.

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=merge+pdf+online+free+unlimited
    • http://files.actforveterans.org/uploads/1/3/0/9/130969686/4149650.pdf
    • http://files.cancerresearchcenter.org/uploads/1/3/2/7/132712268/gomaza-donotijonun-bemuz.pdf
    • http://files.josettecarroll.com/uploads/1/3/1/8/131871912/zurine_viduxow.pdf
    • https://cdn.shopify.com/s/files/1/0436/7728/6565/files/degatezijemoluvasopezunaf.pdf
    • https://cdn.shopify.com/s/files/1/0437/5547/1002/files/82294633739.pdf
    • https://cdn.shopify.com/s/files/1/0431/7849/2062/files/liwukesufavebifikititab.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/hey_angel_one_direction_leaked.pdf
    • https://cdn.shopify.com/s/files/1/0430/4420/8797/files/fogufazixewutajizi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6849/7823/files/23337276698.pdf
    • https://cdn.shopify.com/s/files/1/0433/6805/4949/files/icy_veins_unholy_dk.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/lidepig.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/39956312050.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/rate_function_excel.pdf
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/15391364934.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000048ee.bin
d74f40b21de3a8e67458084ad604e5f2e3294a4a3f72072d238db4cb094df1c8
pdf-font-stream PDF embedded font (sfnt) at offset 0x48EE 4976 bytes
font_01_sfnt_off000059da.bin
cc22222d6887a1c77871c4068cca886f461b6d2e4bc08a1531ca41e06e1b3d08
pdf-font-stream PDF embedded font (sfnt) at offset 0x59DA 9868 bytes