Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc8c6991b2ac836c…

MALICIOUS

PDF

43.6 KB Created: 2020-08-18 16:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8386d979994557c7da51ae57e0f1dad6 SHA-1: 4a61ecb010131b045b0253fbe6be832e4cc1cb6f SHA-256: cc8c6991b2ac836cc185455096dc9400b9c3d6acccc36af377dab2800d1644bb
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are hosted on Shopify, suggesting a link farm for SEO poisoning. One prominent link, 'https://ttraff.ru/pify?keyword=video+script+template+google+docs', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, indicating the primary intent is to redirect users to malicious infrastructure. No scripts were extracted, limiting the analysis of further payload delivery.

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.ru/pify?keyword=video+script+template+google+docs
    • http://files.ccfammo.com/uploads/1/3/1/3/131383478/b5899d9afe9.pdf
    • http://zusukino.kungfuacademic.net/uploads/1/3/1/8/131857252/8890123.pdf
    • http://jajebe.goodshortstories.net/uploads/1/3/1/4/131408103/jirimodimeruwa_fufajaxasebax.pdf
    • https://cdn.shopify.com/s/files/1/0431/4896/8100/files/the_fright_at_tristor.pdf
    • https://cdn.shopify.com/s/files/1/0429/9502/4025/files/niwinewebidokitajilonude.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7700/files/dichiarazione_sostitutiva_dell_atto_di_notoriet_modello.pdf
    • https://cdn.shopify.com/s/files/1/0433/4462/5822/files/amphigorey_again.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8986/files/40006642701.pdf
    • https://cdn.shopify.com/s/files/1/0430/8277/6727/files/givafo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2438/4154/files/xogafaziwo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4617/3852/files/starbucks_case_study_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0434/6059/1776/files/oxford_picture_dictionary_english_persian.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_off00006e02.bin
43fdb6aba552ad115592283cb9a5394a77860b1445b8753af846f1e10e3f5087		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E02 5356 bytes
font_01_sfnt_off00008021.bin
22b489e42dd9382d2f40cf3ed6b25b02a1117bfc6686f897a71b33a4aa8cff50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8021 9908 bytes

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