Malicious PDF — malware analysis report

Static analysis result for SHA-256 7675d11eb6df70f0…

MALICIOUS

PDF

47.3 KB Created: 2020-08-16 23:38:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fcef92cc7f911b6ea4af8f4ccee292b SHA-1: 506c91f56e1443143116fda483baa34f3d1108ff SHA-256: 7675d11eb6df70f08a4bdc0f4c6555caeb35341d4ebdedaaa5e4e279c8b95a10
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body text and heuristic firings indicate a lure, likely a fake invoice or download prompt, to entice users to click the malicious link. The primary malicious URL is https://ttraff.ru/pify?keyword=consultant+scope+of+work+template+document+sample, which likely leads to further malicious content.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.ru/pify?keyword=consultant+scope+of+work+template+document+sample
    • http://files.auroracbdhemp.com/uploads/1/3/2/6/132681863/7087032.pdf
    • http://milumi.elpapartments.com/uploads/1/3/1/6/131606490/c0326c1631b.pdf
    • http://xoxepanox.thebiohealer.com/uploads/1/3/0/8/130813330/ravuke_tijefuwigu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1188/9576/files/ansys_cfx_help.pdf
    • https://cdn.shopify.com/s/files/1/0438/1035/7405/files/calendrio_2020_brasil.pdf
    • https://cdn.shopify.com/s/files/1/0434/3490/1660/files/92726190371.pdf
    • https://cdn.shopify.com/s/files/1/0432/2508/8168/files/mechanical_vibrations_rao.pdf
    • https://cdn.shopify.com/s/files/1/0427/8052/4710/files/79822116511.pdf
    • https://cdn.shopify.com/s/files/1/0428/5395/7799/files/apple_music_app_android.pdf
    • https://cdn.shopify.com/s/files/1/0431/1692/0996/files/53128610516.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/booklet_design_psd_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/1130/8696/files/51143391615.pdf
    • https://cdn.shopify.com/s/files/1/0436/8223/4521/files/pathogenesis_of_neonatal_sepsis.pdf
    • https://cdn.shopify.com/s/files/1/0431/7514/9719/files/kivamiveke.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_off00007b77.bin
d2427075839f004936a991e0d20093368ac7d066eb8d3e5b7000cb5bf709b417
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B77 5364 bytes
font_01_sfnt_off00008db6.bin
a86472db5860e970ed97acb5b195f5d94cd30de1952b558530b923c9bb6dae14
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB6 10072 bytes