Malicious PDF — malware analysis report

Static analysis result for SHA-256 101df1feee0046d2…

MALICIOUS

PDF

36.5 KB Created: 2020-10-11 18:48:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 173c00d80737e616bc7f6a6284822aec SHA-1: 38792077c85dc8b710679e863d4add70a82bb62b SHA-256: 101df1feee0046d2de791e93ac7f849be9a01eb23df196e37556548207b3aa4c
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The document body text, while partially obfuscated, includes the URL "https://ttraff.ru/pify?keyword=what+do+snakes+eat+for+food", indicating an attempt to direct users to malicious infrastructure. The ML classifier strongly supports the malicious verdict.

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.ru/pify?keyword=what+do+snakes+eat+for+food In PDF document text
    • https://site-1039566.mozfiles.com/files/1039566/nuridebazupolipokifa.pdfIn PDF document text
    • https://site-1043545.mozfiles.com/files/1043545/39477163702.pdfIn PDF document text
    • https://site-1037187.mozfiles.com/files/1037187/37691346944.pdfIn PDF document text
    • https://site-1036716.mozfiles.com/files/1036716/39172972147.pdfIn PDF document text
    • https://site-1036874.mozfiles.com/files/1036874/51071761513.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/2981/1359/files/bluetooth_fm_transmitter_target.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2983/5161/files/regawopoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2305/5523/files/julevaruxux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/2199/8501/files/armed_girls_machiavellism_season_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4028/4101/files/36981043564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1698/6534/files/28266017526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0057/7187/files/50502794184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9825/8074/files/gifibobogepemetexaxedana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5448/7969/files/farberware_rotisserie_oven.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2523/8685/files/fodeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7678/6078/files/gerard_way_quotes_about_love.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/7899/9960/files/jason_gideon_criminal_minds_what_happened.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5396 5040 bytes
SHA-256: 573383dd5136dbac10781975859b7a70163abc0010a3f2cae794510b2800193e
font_01_sfnt_off000064bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64BF 9508 bytes
SHA-256: a4bc2fdd0be3e4828b08b00f0ad6ba83427bd8d77d98a509cdc68acba91b636c

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