Malicious PDF — malware analysis report

Static analysis result for SHA-256 89dddda475eec9bc…

MALICIOUS

PDF

39.2 KB Created: 2020-08-14 01:17:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29a5b775b44d4d022d8003b3f1a8062e SHA-1: 111003721a61bb27959787f94d13b13526d5d294 SHA-256: 89dddda475eec9bccb8522e0ccf9ef266bd7e6aa24fa13b624965c290bf13f01
130 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link disguised as a free calendar template. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link leads to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic suggests a large number of outbound links, many hosted on Shopify, likely intended to manipulate search engine results or distribute further malicious content. The presence of a visual download button further supports a social engineering lure.

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=free+year+calendar+template+2020
    • http://towakis.cuesign.org/uploads/1/3/1/1/131164462/xagewuwo.pdf
    • http://files.stthomasabecketchurch.co.uk/uploads/1/3/1/3/131380482/7209896.pdf
    • http://files.drifftblog.com/uploads/1/3/0/7/130739810/5636490.pdf
    • https://cdn.shopify.com/s/files/1/0429/7005/4805/files/9474977912.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/konikulad.pdf
    • https://cdn.shopify.com/s/files/1/0437/9043/4455/files/julejabovizefilowopopuki.pdf
    • https://cdn.shopify.com/s/files/1/0440/8446/1720/files/ninjutsu_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0432/8790/4422/files/kujeb.pdf
    • https://cdn.shopify.com/s/files/1/0429/2050/9596/files/7354442832.pdf
    • https://cdn.shopify.com/s/files/1/0432/4891/0491/files/16061518404.pdf
    • https://cdn.shopify.com/s/files/1/0438/2051/5488/files/alopecias_no_cicatriciales.pdf
    • https://cdn.shopify.com/s/files/1/0440/2121/9493/files/62112831441.pdf
    • https://cdn.shopify.com/s/files/1/0429/8552/1311/files/sosefubitokadibizagume.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/taniseraguvifololesugom.pdf
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/nomutexitomipogevuxe.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_off00005ab3.bin
20903319de3515be18b5eb48eb84da6a3966f88198f53a4b4432884fb837e65c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AB3 5372 bytes
font_01_sfnt_off00006ce8.bin
c3803af6ed57c144e9366a08672807c2551296b29e249bc842bbaa65b9ac6c80
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE8 10296 bytes