Malicious PDF — malware analysis report

Static analysis result for SHA-256 fda3c92788457b3f…

MALICIOUS

PDF

50.6 KB Created: 2020-08-29 13:53:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d555134a85b1f4552f7406d6868f685 SHA-1: 52fa1b035f1aea9d218308cea9afc6ef240fa46f SHA-256: fda3c92788457b3ff92430fb113753b7afac52740bbe66649dd3e5ebd3602de7
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF SEO link farm. One of these links, 'https://ttraff.club/wix?keyword=london+n55+bus', is flagged as pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL and other Shopify URLs, suggesting a coordinated effort to distribute malicious content or manipulate search results.

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.club/wix?keyword=london+n55+bus
    • https://cdn.shopify.com/s/files/1/0434/3513/1046/files/manual_nose_hair_trimmer_walmart.pdf
    • https://cdn.shopify.com/s/files/1/0429/4544/6044/files/50207873445.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/toefl_test_preparation.pdf
    • https://static.usrfiles.com/ugd/b8c837_3a85237944c9407db442d056a75f016f.pdf
    • https://static.usrfiles.com/ugd/b8c837_f81a524b494b4cceaccf729746aa510e.pdf
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/zagibaworar.pdf
    • https://cdn.shopify.com/s/files/1/0434/0596/7527/files/wifutepuwug.pdf
    • https://cdn.shopify.com/s/files/1/0447/9506/8567/files/meme_generator_zombodroid_apk.pdf
    • https://cdn.shopify.com/s/files/1/0435/8507/7405/files/xizukak.pdf
    • https://cdn.shopify.com/s/files/1/0434/7248/6566/files/turefora.pdf
    • https://cdn.shopify.com/s/files/1/0463/1858/3973/files/43990778954.pdf
    • https://cdn.shopify.com/s/files/1/0432/5651/2680/files/92955584973.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_off000067a9.bin
6da03ef06a095644289da271556eecbd8bafde4ff9b9026edac1e82facbabe21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67A9 4688 bytes
font_01_sfnt_off000077b4.bin
11e38633e06edba4b8011fd0d7ad3a207bcad745717e9fa669b4e73f3191bf05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77B4 15120 bytes
font_02_sfnt_off0000a6c5.bin
a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6C5 16204 bytes

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