Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff6bdad9e9d988fe…

MALICIOUS

PDF

46.6 KB Created: 2020-08-08 05:42:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 869024a127eb16c7f3d2218a11613867 SHA-1: 4d9bc7c423d890c9ef4e7e7c1b5ea05167fd72dd SHA-256: ff6bdad9e9d988fe8681854c30d79ebeb1f3ea98f86a17a057bc7d26b11db655
168 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting a form or manual, and the presence of a 'download button' heuristic combined with a 'password archive lure' suggests a social engineering attempt to trick the user into downloading a malicious file. The primary malicious URL identified is ttraff.com.

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.com/wb?keyword=form%2016a%20manual%20format
    • http://files.iprawa.net/uploads/1/3/2/8/132816066/d34de28e.pdf
    • http://files.harperdrama.com/uploads/1/3/1/4/131453753/vomemavif-xoxur-lopuwafukes-gesofobulinel.pdf
    • http://files.fineartfitout.co.nz/uploads/1/3/0/7/130739182/zomisetaluzese.pdf
    • http://files.deltagenetics.com/uploads/1/3/0/7/130775953/webuxaxafilibig.pdf
    • https://cdn.shopify.com/s/files/1/0428/4448/7836/files/jiwuzudewevafidurite.pdf
    • https://cdn.shopify.com/s/files/1/0428/1637/2892/files/budwig_protocol_book.pdf
    • https://cdn.shopify.com/s/files/1/0436/2217/0786/files/52219620481.pdf
    • https://cdn.shopify.com/s/files/1/0434/6540/8662/files/76059824183.pdf
    • https://cdn.shopify.com/s/files/1/0427/8799/5807/files/40580576073.pdf
    • https://cdn.shopify.com/s/files/1/0434/4535/4658/files/fovabobesudujud.pdf
    • https://cdn.shopify.com/s/files/1/0435/9569/4239/files/zogozutuzaluzesefibup.pdf
    • https://cdn.shopify.com/s/files/1/0440/8888/5413/files/77308611038.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/dijovowotuxaposixe.pdf
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/26325401005.pdf
    • https://cdn.shopify.com/s/files/1/0449/8790/8264/files/ejercicios_de_quimica_organica_alcanos_alquenos_y_alquinos.pdf
    • https://cdn.shopify.com/s/files/1/0432/8266/1526/files/sonajukadusosewe.pdf
    • https://cdn.shopify.com/s/files/1/0430/7098/0247/files/36506894037.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_off000079ec.bin
3442e0a50405defd213ad460a6f0ee4f5de5afbfa1ce7d5cc8f8b9f6a5568b48
pdf-font-stream PDF embedded font (sfnt) at offset 0x79EC 4896 bytes
font_01_sfnt_off00008a85.bin
03d2ed89f3332d8a73c8593f93eecf7f64408cc242c39317494fd4d6c7adba3b
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A85 10228 bytes