Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f2136e7cbef9f23…

MALICIOUS

PDF

40.9 KB Created: 2020-08-25 04:16:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67a7c4e5c5a42ea74eefa6a680874355 SHA-1: 677528f975994bb4f928e345c3dc957d4d3c5903 SHA-256: 7f2136e7cbef9f239d1f3e0785a0fd1a87d4c5b99a0646a23d471bd61bdedfb3
128 Risk Score

Malware Insights

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

The PDF file contains embedded links that point to a redirector service, which is a common tactic for delivering malicious payloads. The document body text and heuristic firings indicate a lure related to payment receipts, designed to trick users into clicking the malicious link. The primary malicious URL identified is https://ttraff.com/pify?keyword=letter+receipt+of+payment+template, which is linked to known malicious redirector infrastructure.

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.
  • 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
  • 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/pify?keyword=letter+receipt+of+payment+template
    • http://files.sydneysoapmaking.com/uploads/1/3/1/4/131438567/2524152.pdf
    • http://files.portalresearch.org/uploads/1/3/1/3/131380600/zozimosutevazux_sipusupofegez_vugenusilofakov.pdf
    • http://sojinu.thegreatpumpkinproject.com/uploads/1/3/1/4/131437792/e17b53d2.pdf
    • http://vuwomozu.artculturevs.org/uploads/1/3/1/3/131379394/debazemololumobug.pdf
    • http://files.benwahrlebaseballparks.com/uploads/1/3/0/7/130740571/lomeguvuju_damagafobi.pdf
    • https://cdn.shopify.com/s/files/1/0434/1917/3029/files/19057496632.pdf
    • https://cdn.shopify.com/s/files/1/0438/3732/5472/files/gipolixelizenetu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/41716008663.pdf
    • https://cdn.shopify.com/s/files/1/0437/2594/7029/files/82888510964.pdf
    • https://cdn.shopify.com/s/files/1/0433/6254/9910/files/retuwitewesofamuj.pdf
    • https://cdn.shopify.com/s/files/1/0428/7932/0223/files/ronukak.pdf
    • https://cdn.shopify.com/s/files/1/0440/5601/9109/files/rearrange_sentences_for_class_3_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/9676/8661/files/29924771232.pdf
    • https://cdn.shopify.com/s/files/1/0429/5108/2143/files/73365207449.pdf
    • https://cdn.shopify.com/s/files/1/0432/8233/3856/files/bakery_business_model.pdf
    • https://cdn.shopify.com/s/files/1/0437/3417/1797/files/38386190263.pdf
    • https://cdn.shopify.com/s/files/1/0465/4576/4510/files/54014561734.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_off00006250.bin
e9940f66cd5109f851dcbf577bcec08467d22381b52ae4b876179cd982da148d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6250 5028 bytes
font_01_sfnt_off00007361.bin
c5b992bf30deb28e67e7c22f305f3fd4c92370688146d17f630c3a9b67b50c3c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7361 10364 bytes