Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd82061a0a23197b…

MALICIOUS

PDF

45.4 KB Created: 2020-08-10 13:32:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92c3da37b863637bc3c325c0e337bfa7 SHA-1: 6132addc35931b5eff9293e7f618beff717971bb SHA-256: dd82061a0a23197b90983c435eb9d14eb415e7917a3a044187cd82598571b8ed
128 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a link farm. The document body, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. The presence of a 'download button' lure further supports the malicious intent. The primary attack vector appears to be tricking the user into clicking a link that leads to malicious content.

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=asthma+action+plan+canada+pdf
    • http://files.malgraphy.com/uploads/1/3/0/8/130874201/pofepibusozix.pdf
    • http://toguregoj.youdesignleather.com/uploads/1/3/2/3/132303195/moxixisi.pdf
    • http://files.jseequipment.com/uploads/1/3/2/7/132740377/jitixovatiwusi.pdf
    • http://files.capetgear.com/uploads/1/3/1/1/131164531/tuvusinetegod_pijisorupej_memotejivudaraj_vinad.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/lufominatedux.pdf
    • https://cdn.shopify.com/s/files/1/0433/7188/8803/files/konek.pdf
    • https://cdn.shopify.com/s/files/1/0429/7592/0282/files/dinubo.pdf
    • https://cdn.shopify.com/s/files/1/0438/8097/2456/files/54341366.pdf
    • https://cdn.shopify.com/s/files/1/0429/6939/9452/files/duxixasewutivomamalutuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/7170/9092/files/sovimopatugada.pdf
    • https://cdn.shopify.com/s/files/1/0440/1207/7206/files/jovekawulu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4184/8470/files/lesotubusod.pdf
    • https://cdn.shopify.com/s/files/1/0437/4714/7928/files/21526238672.pdf
    • https://cdn.shopify.com/s/files/1/0432/8685/5840/files/lapobovetukuxuxin.pdf
    • https://cdn.shopify.com/s/files/1/0432/9340/9438/files/galileo_by_bertolt_brecht.pdf
    • https://cdn.shopify.com/s/files/1/0432/5254/7739/files/jisonumarob.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_off000073c6.bin
27926893f68ebd58a689d0ca9bb4580ee3191a3d168b9fd4eba38423a5d70784
pdf-font-stream PDF embedded font (sfnt) at offset 0x73C6 5288 bytes
font_01_sfnt_off00008597.bin
a7fbf3d3559da846f5719ff41dd6459fdb15dcc0193f600346e67c54f13e7047
pdf-font-stream PDF embedded font (sfnt) at offset 0x8597 10256 bytes