Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d522718d7e5a5d6…

MALICIOUS

PDF

33.4 KB Created: 2020-08-31 17:37:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6a3ed3fe8d9509d7acd7024ebbf7008 SHA-1: 36907019c3a7ab5a2baaa03276d7fb1518a8bfc9 SHA-256: 5d522718d7e5a5d655d654518ba799bc2fc07ffad22876c52c9a9c9eb6f85173
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to known malicious redirector infrastructure at `https://ttraff.com/wix?keyword=magic+kingdom+guide+map+2018`. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious sites. The presence of numerous links, many to Shopify-hosted PDFs, indicates a link farm designed to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.com/wix?keyword=magic+kingdom+guide+map+2018
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0681/1560/files/34125300889.pdf
    • https://cdn.shopify.com/s/files/1/0431/3396/0341/files/40833369701.pdf
    • https://cdn.shopify.com/s/files/1/0430/4453/6473/files/68189732823.pdf
    • https://cdn.shopify.com/s/files/1/0433/6415/5560/files/sararuruge.pdf
    • https://cdn.shopify.com/s/files/1/0438/7730/2427/files/1450573563.pdf
    • https://cdn.shopify.com/s/files/1/0429/2696/4903/files/fresh_blueberries_nutritional_information.pdf
    • https://static.usrfiles.com/ugd/b8c837_4c2e045a93f94478b4936269a56ed123.pdf
    • https://static.usrfiles.com/ugd/11f207_ee7ae1b4c00a4e12b06e5267cddf37d8.pdf
    • https://static.usrfiles.com/ugd/b8c837_07bfda3f47ad47bc857ddf167f47618f.pdf
    • https://cdn.shopify.com/s/files/1/0432/9088/6312/files/information_security_news_site.pdf
    • https://cdn.shopify.com/s/files/1/0432/9734/1604/files/28775880951.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000041ab.bin
e13989588fd39fa186cc774d021fe92759ba86ac22d0fd256cecb2e8ff07a356
pdf-font-stream PDF embedded font (sfnt) at offset 0x41AB 5676 bytes
font_01_sfnt_off00005507.bin
0b6f1505eb0e55a9678e727db28af4bc850ae4f0735960d6a134f17436ce1029
pdf-font-stream PDF embedded font (sfnt) at offset 0x5507 10220 bytes