Malicious PDF — malware analysis report

Static analysis result for SHA-256 e653547ec7b41793…

MALICIOUS

PDF

36.8 KB Created: 2020-08-15 08:41:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f09f36bb77c67a033f7780879a66673 SHA-1: 2a9829c6b13c12acc303df622064810ee0b017cf SHA-256: e653547ec7b41793899f8be8669702e9f54e84cb7f6048e7c81c4d00abc8ce36
152 Risk Score

Malware Insights

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

The PDF file contains a malicious redirector link that is designed to lure users into downloading potentially harmful content. The document body and heuristics indicate a social engineering tactic, specifically a lure for 'animoji for iphone x apk', which redirects to the `ttraff.com` domain. This domain is flagged as a known malicious redirector. The file also contains a large number of embedded links, many pointing to Shopify, likely part of a link farm to improve search engine ranking for 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/pify?keyword=animoji+for+iphone+x+apk
    • http://welenawe.ssilandbank.ca/uploads/1/3/1/6/131606289/5888776.pdf
    • https://cdn.shopify.com/s/files/1/0431/5293/3019/files/beniz.pdf
    • https://cdn.shopify.com/s/files/1/0428/1974/7999/files/bromatologia_em.pdf
    • https://cdn.shopify.com/s/files/1/0429/4279/1839/files/pure_and_untouched_barbara_cartland_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/8865/8078/files/88230353835.pdf
    • https://cdn.shopify.com/s/files/1/0435/3576/1562/files/certificate_of_analysis_template_fda.pdf
    • https://cdn.shopify.com/s/files/1/0441/2506/1272/files/camino_de_santiago_guide_book.pdf
    • https://cdn.shopify.com/s/files/1/0434/5466/0758/files/82236821081.pdf
    • https://cdn.shopify.com/s/files/1/0435/6558/0437/files/principles_of_helicopter_aerodynamics_leishman.pdf
    • https://cdn.shopify.com/s/files/1/0428/5077/9295/files/jajenem.pdf
    • https://cdn.shopify.com/s/files/1/0440/0388/5206/files/47075723572.pdf
    • https://cdn.shopify.com/s/files/1/0429/5560/4134/files/pepofawavudu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/91937361079.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004783.bin
75295bfd86465755b7ac54b117e0fc6e3504ca15b86f5e484aab4633c332faff
pdf-font-stream PDF embedded font (sfnt) at offset 0x4783 4836 bytes
font_01_sfnt_off000057b6.bin
9e1b992a07fe578d73da1e2acbf19b6d4df97dd864a498c095fbf19aa4bdf49b
pdf-font-stream PDF embedded font (sfnt) at offset 0x57B6 9624 bytes
font_02_sfnt_off0000789d.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x789D 4324 bytes