Malicious PDF — malware analysis report

Static analysis result for SHA-256 acf9656f13c0fb15…

MALICIOUS

PDF

49.6 KB Created: 2020-08-24 08:03:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a34b85e821a8831f92cbb05b79e3b973 SHA-1: 77c27a5e659b9616e7ab4062683aceacc0ad1d76 SHA-256: acf9656f13c0fb152f66c28a40938e18aaa1ea059edc8997014e96a0baf8fd54
128 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a known malicious domain, ttraff.com, disguised with a keyword relevant to the document's apparent content. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to Shopify domains, likely for SEO manipulation or to obscure the malicious redirector. The presence of a visual download button heuristic further supports the lure-based attack pattern.

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.com/pify?keyword=android+tv+para+raspberry+pi+3
    • http://files.nomadikyoga.com/uploads/1/3/2/8/132814241/3994555.pdf
    • http://files.tomorrowlandtshirtauthority.com/uploads/1/3/0/8/130814682/nixafavavij-vureb.pdf
    • https://cdn.shopify.com/s/files/1/0433/4478/9669/files/augmented_operator_advisor.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kepikopu.pdf
    • https://cdn.shopify.com/s/files/1/0447/4558/8887/files/paula_isabel_allende_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0434/0845/7895/files/30372746138.pdf
    • https://cdn.shopify.com/s/files/1/0431/7364/2406/files/sharp_carousel_convection_microwave_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/8721/7319/files/95270046660.pdf
    • https://cdn.shopify.com/s/files/1/0427/9340/2534/files/3331100820.pdf
    • https://cdn.shopify.com/s/files/1/0436/3524/5216/files/jabof.pdf
    • https://cdn.shopify.com/s/files/1/0437/5461/9041/files/12948815386.pdf
    • https://cdn.shopify.com/s/files/1/0438/0635/9714/files/74154107307.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gefoviliruvowej.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/27199940749.pdf
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/define_the_concept_risk_behaviour.pdf
    • https://cdn.shopify.com/s/files/1/0428/6418/1404/files/demirasukijeb.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000760f.bin
0fb413d69d5a6edda6a163e6130d0c313441c1cb777a09f5f3aa60a0358d0d51
pdf-font-stream PDF embedded font (sfnt) at offset 0x760F 5164 bytes
font_01_sfnt_off000087a4.bin
78f686f89e2ba54f53a95eaa6b732f1c80cac8bed554a44c3b3e48b534c9d091
pdf-font-stream PDF embedded font (sfnt) at offset 0x87A4 10416 bytes
font_02_sfnt_off0000ab53.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB53 4324 bytes