Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea4f26f6a0c0e540…

MALICIOUS

PDF

41.8 KB Created: 2020-08-09 08:47:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ecd79631ff88404848f861879babb86 SHA-1: 0cfc1224395a858a0ed0416d55b807d69f5ba263 SHA-256: ea4f26f6a0c0e5408f9ba9100845207519b0b97941c208a9e2b2d2149af14a8f
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to benign Shopify URLs, but one critical link redirects to known malicious infrastructure at 'ttraff.ru'. This indicates the document is designed to lure users into clicking malicious links, likely for phishing or malware distribution. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is sufficient evidence for the attack pattern.

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=man+the+unknown+dr+alexis+carrel+pdf
    • http://files.adsregion11.org/uploads/1/3/0/8/130813841/4273545.pdf
    • http://fifawimo.sophiapriolo.com/uploads/1/3/1/4/131407089/261f2f4cf3a569.pdf
    • http://files.frenchquartersalon.com/uploads/1/3/0/8/130813317/mavapelo.pdf
    • http://files.zetagammalcu.com/uploads/1/3/1/3/131397987/fukepasisi.pdf
    • https://cdn.shopify.com/s/files/1/0435/9120/5021/files/pdf_to_word_converter_offline_apk_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0437/9249/8850/files/29861983220.pdf
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/rock_and_roll_part_2_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baludugosutagaxoreforodul.pdf
    • https://cdn.shopify.com/s/files/1/0432/8387/3942/files/11014377184.pdf
    • https://cdn.shopify.com/s/files/1/0435/2465/3224/files/caruso_st_john_almost_everything.pdf
    • https://cdn.shopify.com/s/files/1/0437/5796/1374/files/fairy_tail_213_english_dubbed.pdf
    • https://cdn.shopify.com/s/files/1/0434/3326/3253/files/gajadafiwadedijugebenuxe.pdf
    • https://cdn.shopify.com/s/files/1/0435/9094/2888/files/valkyrie_profile_psp.pdf
    • https://cdn.shopify.com/s/files/1/0431/8255/5297/files/22427865048.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/pofelefukifurulajawujetu.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_off0000655f.bin
6c90c901dd9125c6266074475e1db84da579824801a11ffe38cb29ba177fbad0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x655F 5472 bytes
font_01_sfnt_off00007819.bin
7c35da67b020fd1596509daf99d4765218b01f309f5eb328e49035c1ad4983e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7819 9876 bytes

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