Malicious PDF — malware analysis report

Static analysis result for SHA-256 77512803ffb2664a…

MALICIOUS

PDF

43.7 KB Created: 2020-08-05 04:31:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76bb58518136686b6d747570b01bff44 SHA-1: 6c7390fe0460ed3dfad31dafe7da4004213d10a0 SHA-256: 77512803ffb2664ae2ea4c50b0b19bee47f59ae2e3ab7242a7acead6384a4e87
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=concept+of+human+growth+and+development+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with 'https://cdn.shopify.com/s/files/1/0434/3955/4727/files/nitekiwegag.pdf' being the first identified. The document body, though heavily obfuscated, contains the same URL as the redirector, suggesting a social engineering lure to download a PDF. No scripts were extracted, limiting further analysis of execution behavior.

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.cc/pify?keyword=concept+of+human+growth+and+development+pdf
    • http://files.glutenfreeinokc.com/uploads/1/3/1/3/131384081/1ce90.pdf
    • http://nosomeva.designsbynoodle.com/uploads/1/3/0/7/130776487/54e2fd.pdf
    • http://files.westwoodunidos.org/uploads/1/3/1/3/131383727/5725593.pdf
    • https://cdn.shopify.com/s/files/1/0434/3955/4727/files/nitekiwegag.pdf
    • https://cdn.shopify.com/s/files/1/0434/9889/7574/files/tukalikuwebigodob.pdf
    • https://cdn.shopify.com/s/files/1/0432/7214/3001/files/nejameguxumirawedepijugab.pdf
    • https://cdn.shopify.com/s/files/1/0440/9245/7112/files/hp_usb_disk_storage_format_tool.pdf
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/65418060272.pdf
    • https://cdn.shopify.com/s/files/1/0432/9875/0619/files/bisuluvejafavitaruvibules.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56751463133.pdf
    • https://cdn.shopify.com/s/files/1/0448/0902/7735/files/worksheets_on_synonyms_and_antonyms.pdf
    • https://cdn.shopify.com/s/files/1/0432/8855/9782/files/advanced_language_practice_vince.pdf
    • https://cdn.shopify.com/s/files/1/0431/0122/5114/files/soretefoloxozimitanuk.pdf
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/jiwagiroweziweroruguvavet.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_off00006bc7.bin
969fcdab7809809346920852650072bf2964c11991e263259872a073fc4d02b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC7 5448 bytes
font_01_sfnt_off00007e3b.bin
3193af11ac41e4fc881279f063f5bbcf5359a164a208adee5e57d3bb4daca3fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E3B 10440 bytes

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