Malicious PDF — malware analysis report

Static analysis result for SHA-256 9122d9d851429a6f…

MALICIOUS

PDF

42.2 KB Created: 2020-08-22 06:48:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59fa9853c0365208d6a8a6c5e8e886ef SHA-1: a217a0c94586ea02d046e157f9f1fb08f7e5d807 SHA-256: 9122d9d851429a6fcab36c46dbf5bbab53903a3fe815d21914d7e7cb6bf09ae4
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=baby+clothes+size+guide+uk`. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on `cdn.shopify.com`. The document body, though partially corrupted, contains the lure text 'Baby clothes size guide uk' and the malicious URL. The primary attack pattern involves social engineering through a deceptive link.

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=baby+clothes+size+guide+uk
    • http://files.shallyns.com/uploads/1/3/1/4/131437174/d95ae.pdf
    • http://naredulax.mythundermark.com/uploads/1/3/1/0/131070450/3194050.pdf
    • http://xisenuxa.tammysimmons.org/uploads/1/3/2/8/132814930/mugewudafabamirufa.pdf
    • https://cdn.shopify.com/s/files/1/0434/9453/9429/files/3678237744.pdf
    • https://cdn.shopify.com/s/files/1/0429/3948/2275/files/javascript_template_literals.pdf
    • https://cdn.shopify.com/s/files/1/0440/5926/3141/files/68857648959.pdf
    • https://cdn.shopify.com/s/files/1/0431/5794/6522/files/83410851228.pdf
    • https://cdn.shopify.com/s/files/1/0429/0124/2022/files/pakubejumobijodu.pdf
    • https://cdn.shopify.com/s/files/1/0441/3066/4600/files/sijogasoterovulufobe.pdf
    • https://cdn.shopify.com/s/files/1/0434/4712/4130/files/research_concept_note_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/0987/5873/files/37465632857.pdf
    • https://cdn.shopify.com/s/files/1/0431/6112/5015/files/blue_eyes_song_ringtone.pdf
    • https://cdn.shopify.com/s/files/1/0430/9742/4026/files/7577178024.pdf
    • https://cdn.shopify.com/s/files/1/0439/5764/9566/files/15385316819.pdf
    • https://cdn.shopify.com/s/files/1/0430/7301/1866/files/alma_ata_declaration_of_1978.pdf
    • https://cdn.shopify.com/s/files/1/0437/6120/5399/files/mururuna.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_off00006778.bin
bf32e9d5e3a454211307ab1cc5bec53e33574fb3aa8cba2ebee80c86163e392c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6778 5508 bytes
font_01_sfnt_off00007a32.bin
d1db7a846bb240eeb5d12eda8467d04356cedbc357e4a14dba118f64576077d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A32 9920 bytes

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