Malicious PDF — malware analysis report

Static analysis result for SHA-256 236e857d5c35386f…

MALICIOUS

PDF

34.2 KB Created: 2020-08-26 07:14:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c7f5bb1cd60ccc699430d5190d658c7 SHA-1: 5338947917f912570c7d4b56621489e80ea1dd90 SHA-256: 236e857d5c35386fc4484bec546a00cc99e918387ab5c59d4b5b63c745c5b809
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 link farm. The primary malicious URL, 'https://ttraff.ru/pify?keyword=dream+league+soccer', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL and other PDF links, 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.ru/pify?keyword=dream+league+soccer
    • http://files.arapahoepainting.com/uploads/1/3/0/8/130814234/5477d58d63e.pdf
    • http://files.surrysmithart.com/uploads/1/3/2/6/132695455/gazoxidavivareta.pdf
    • https://cdn.shopify.com/s/files/1/0429/7388/8671/files/95933504636.pdf
    • https://cdn.shopify.com/s/files/1/0433/9171/3447/files/8719846788.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/xusatusonevata.pdf
    • https://cdn.shopify.com/s/files/1/0428/4160/4263/files/pajadevepezuvu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8049/8841/files/44973733849.pdf
    • https://cdn.shopify.com/s/files/1/0432/5395/6758/files/understanding_stock_market_for_dummies.pdf
    • https://cdn.shopify.com/s/files/1/0432/7335/5424/files/radio_shack_pro_668_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/8612/7009/files/film_indir_hd_trke_dublaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/1165/4307/files/8897519441.pdf
    • https://cdn.shopify.com/s/files/1/0428/1624/1831/files/dbrau_exam_date_sheet_2018_sarkari_result.pdf
    • https://cdn.shopify.com/s/files/1/0428/5097/5910/files/gefusulotimuko.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/samsad_english_to_bengali_dictionary_file.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6695/files/10116278170.pdf
    • https://cdn.shopify.com/s/files/1/0430/7186/4993/files/climate_change_and_biodiversity_loss.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_off000044c2.bin
2b12b262af79972d7ca6d2853ae97ba01ae4d57f7e3964e80131043ed7ac942d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44C2 5116 bytes
font_01_sfnt_off00005615.bin
2a7538aa97452f777d9a528fb66618ad01c772901171ae996da6ef866ca03683		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5615 11812 bytes

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