Malicious PDF — malware analysis report

Static analysis result for SHA-256 f62b63d3b8b9d3b3…

MALICIOUS

PDF

51.8 KB Created: 2020-08-22 08:39:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 025c35efe25af87746bbd964ea30516e SHA-1: 2319c7576f2ee58c6a79633340f9d73fedeaf02b SHA-256: f62b63d3b8b9d3b3b88df02acf351422c08c7a6f6edfb96add7bf4e12b90bd6c
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links hosted on cdn.shopify.com, suggesting an attempt to distribute content or lure users. The presence of a 'download button' heuristic further supports the lure-based attack pattern. The document body, though heavily obfuscated, contains the malicious URL.

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.ru/pify?keyword=ac+market+apk++version+4.+0
    • http://files.siouxcenterwaa.org/uploads/1/3/2/6/132682076/kegaketuv-lomekozegiwabe-pajuloxokitolet.pdf
    • http://lizibo.nlcoopertyres.co.nz/uploads/1/3/1/6/131606069/5ceadd843.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53607129813.pdf
    • https://cdn.shopify.com/s/files/1/0439/8075/1006/files/gizesojejoluzolir.pdf
    • https://cdn.shopify.com/s/files/1/0434/7330/5762/files/gufiretefogawodul.pdf
    • https://cdn.shopify.com/s/files/1/0429/0864/7580/files/zizawixixofazogadawopog.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/ralirilituwitonaxunaropa.pdf
    • https://cdn.shopify.com/s/files/1/0429/1425/0905/files/charles_baudelaire_les_fleurs_du_mal.pdf
    • https://cdn.shopify.com/s/files/1/0461/9773/5575/files/jivadir.pdf
    • https://cdn.shopify.com/s/files/1/0441/0540/0472/files/definition_of_variance_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0434/0757/3149/files/cobb_bbq_recipe_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/5012/9813/files/leveraxabasokotifonoga.pdf
    • https://cdn.shopify.com/s/files/1/0431/6961/1930/files/refepujixumapilufis.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_off00008025.bin
113e7f131acd78e47156209841a9b1903c20b1d7aa3a19d5fdd2daab19fc5f87
pdf-font-stream PDF embedded font (sfnt) at offset 0x8025 5208 bytes
font_01_sfnt_off000091bc.bin
797654dc640d4a369e7d2e14f218bb7e94c7f9373fae3506c0dc81bf573b1832
pdf-font-stream PDF embedded font (sfnt) at offset 0x91BC 9996 bytes
font_02_sfnt_off0000b3f8.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xB3F8 4324 bytes