Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ea26ac64f2ea95…

MALICIOUS

PDF

42.4 KB Created: 2020-09-06 15:43:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f62fd69c802152b42cd68aa3e512614a SHA-1: 21a0891af5b3d3b82d0e20e08372d1523b4cdd3d SHA-256: d6ea26ac64f2ea95713ee15aef36ca3390d1ded406878f2f21605cf2a8965d04
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a solution to an 'authentication problem android wifi sony xperia'. The document body and heuristics indicate a lure to click this link, which likely leads to a malicious site. The presence of a link farm further suggests an attempt to distribute 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.club/wix?keyword=authentication+problem+android+wifi+sony+xperia
    • https://static.usrfiles.com/ugd/8127dd_872f658c832e46c08e62ce593ace269b.pdf
    • https://static.usrfiles.com/ugd/79e0dc_7c94460325a84463956f9922a7daf653.pdf
    • https://static.usrfiles.com/ugd/a91264_2906760923c54d6c9c4c3deab17e864a.pdf
    • https://static.usrfiles.com/ugd/6c98bc_df687dbf3f1041788bcae1ada5c617a6.pdf
    • https://static.usrfiles.com/ugd/5a4aad_eaa82ff06be04a9c98a9fab3d755797f.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/10217245918.pdf
    • https://cdn.shopify.com/s/files/1/0432/6732/6110/files/87843187718.pdf
    • https://cdn.shopify.com/s/files/1/0430/4365/1735/files/nizunigopumewujub.pdf
    • https://cdn.shopify.com/s/files/1/0433/2175/3758/files/baahubali_audio_song_masstamilan.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/5578033559.pdf
    • https://cdn.shopify.com/s/files/1/0437/9148/3031/files/28590769897.pdf
    • https://cdn.shopify.com/s/files/1/0434/7238/8246/files/35765450646.pdf
    • https://cdn.shopify.com/s/files/1/0436/9245/8152/files/natifubolekowijag.pdf
    • https://cdn.shopify.com/s/files/1/0434/4800/8866/files/49990388162.pdf
    • https://cdn.shopify.com/s/files/1/0434/2549/7239/files/muwavumivevaxixabag.pdf
    • https://cdn.shopify.com/s/files/1/0434/2625/0901/files/98178705981.pdf
    • https://cdn.shopify.com/s/files/1/0432/9524/4441/files/kayla_itsines_bbg_2._0.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_off0000666c.bin
8bab108f0c721408b6d95727cdd1395c9deaaf74780ace635768fdbadfb531e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x666C 5788 bytes
font_01_sfnt_off00007a01.bin
4254f45e459ba280bf2dc367eaf247e4ecc4efe9e8d7c7273e61f52b6dba0fb8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A01 9948 bytes