Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f3586c5e608649d…

MALICIOUS

PDF

37.8 KB Created: 2020-08-26 11:46:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fe828b0c1eb5d60a98cc28ddbc6d331 SHA-1: 836882756ff82e29b9948cb5ef5766a0ea6f26f9 SHA-256: 8f3586c5e608649de431bdbc4cd50ca0d846620969ac3f4edd9082310d238d6a
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains a reference to the same URL. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which are benign Shopify links, but one points to a suspicious domain. The primary attack vector appears to be social engineering through a deceptive link.

Heuristics 3

  • 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.
  • 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=shadow+of+the+colossus+rom
    • http://rorut.nhgahplgsresidency.com/uploads/1/3/2/6/132681477/ab9a09abdaeb9f6.pdf
    • https://cdn.shopify.com/s/files/1/0433/8050/6785/files/xapul.pdf
    • https://cdn.shopify.com/s/files/1/0437/1759/1189/files/batman_arkham_city_strategy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/3782/6973/files/35878598499.pdf
    • https://cdn.shopify.com/s/files/1/0435/0525/4566/files/lightroom_presets_free_zip.pdf
    • https://cdn.shopify.com/s/files/1/0429/4089/1292/files/texow.pdf
    • https://cdn.shopify.com/s/files/1/0437/6962/6781/files/solving_equations_algebra_2_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/2883/9581/files/28908091311.pdf
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/wowupunuludupimufan.pdf
    • https://cdn.shopify.com/s/files/1/0430/2739/8807/files/96349896468.pdf
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/kajian_amalan_gaya_hidup_sihat.pdf
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/32598896846.pdf
    • https://cdn.shopify.com/s/files/1/0431/1180/9190/files/97656130488.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_off00004877.bin
99ba32bfca5eca8e9254cd89468aad676343e77f0a5edd8e2add7ac314e87ce7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4877 5184 bytes
font_01_sfnt_off00005a23.bin
811ede5de2400e5bce5b95e2147c035e74a84e4afd35c86d0ab8375b9b10f938		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A23 10612 bytes
font_02_sfnt_off00007c88.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C88 4324 bytes

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