Malicious PDF — malware analysis report

Static analysis result for SHA-256 66427087dd7dbc5a…

MALICIOUS

PDF

37.1 KB Created: 2020-09-03 02:56:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a8dcf13fb4ad7fc3ba604d89085a218 SHA-1: d6cb46f6d9f8634b97688740a72aeca04fa6952b SHA-256: 66427087dd7dbc5a688b4282f96328f6773fa8250b04a510ca879d1b2393e084
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically the URL https://ttraff.me/wix?keyword=happy+new+year+2019+background+hd. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a link farm or SEO poisoning tactic. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves tricking users into clicking a malicious link embedded within the document.

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.me/wix?keyword=happy+new+year+2019+background+hd
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/6913/7305/files/jevamefifitawubi.pdf
    • https://cdn.shopify.com/s/files/1/0452/6243/8560/files/54652240333.pdf
    • https://cdn.shopify.com/s/files/1/0439/1731/2168/files/bahubali_2_movie_full_hd_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0438/2670/8637/files/ccna_routing_and_switching_short_notes.pdf
    • https://cdn.shopify.com/s/files/1/0437/2794/5889/files/donell_jones_where_i_wanna_be_mp3.pdf
    • https://static.usrfiles.com/ugd/b8c837_685805a2e6f94bc3a55f425cf588e642.pdf
    • https://static.usrfiles.com/ugd/b8c837_f48536f7208c499baacd5fd2431ace0c.pdf
    • https://static.usrfiles.com/ugd/cd79e3_bd02308765dc4ed488ce4ac3ca0ac290.pdf
    • https://static.usrfiles.com/ugd/b8c837_7a9900ea248a4ee1b9f7bee44bbebd19.pdf
    • https://cdn.shopify.com/s/files/1/0435/5063/8241/files/real_madrid_live_streaming.pdf
    • https://cdn.shopify.com/s/files/1/0434/4243/8310/files/12683779486.pdf
    • https://cdn.shopify.com/s/files/1/0431/1380/8033/files/uttarakhand_open_university_admission_form_2019-_20.pdf
    • https://cdn.shopify.com/s/files/1/0428/2194/3463/files/9807073218.pdf
    • https://static.usrfiles.com/ugd/804ff6_76344785a47b4f2388aa36ec048c52f4.pdf
    • https://static.usrfiles.com/ugd/86319b_0f3cda1cedcf4515b7d50927f58534c9.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_off0000549e.bin
e901a83f8b556f34aab85c80dc3b3bfffb6ec53e70429fcc864d5df6e661c933		 pdf-font-stream PDF embedded font (sfnt) at offset 0x549E 5964 bytes
font_01_sfnt_off000068fb.bin
c01e46775c5463970c1713c1f0e2564350d6e16a1071382532663ecb7b7381f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68FB 9088 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.