Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e42498bd76ed6c3…

MALICIOUS

PDF

178.2 KB Created: 2020-08-18 17:13:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b1d02bb5ddd1a9f84a66186f3ed9f41 SHA-1: 086018e020ebab5602145d105bb7a9e2571a673f SHA-256: 9e42498bd76ed6c37e50a1694df56e28cc969eaab6fc6267b019152266d8cc10
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a critical heuristic firing indicating a malicious redirector link to 'https://ttraff.cc/pify?keyword=ak+photos+hd'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, appears to contain the malicious URL. This suggests the primary intent is to lure the user to the malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • 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.cc/pify?keyword=ak+photos+hd
    • http://files.garnersoftware.com/uploads/1/3/1/4/131453206/7580303.pdf
    • http://latisut.trendystylesonline.com/uploads/1/3/2/3/132302921/1ad6d4744c.pdf
    • http://wuvode.thesecrettohealthyliving.com/uploads/1/3/1/3/131379641/6350536.pdf
    • http://files.radicalwhispers.org/uploads/1/3/0/7/130738628/310462.pdf
    • http://files.lexingtonparkdistrict.org/uploads/1/3/0/9/130970016/lojosev_sipogaxepok_jabitimun.pdf
    • https://cdn.shopify.com/s/files/1/0451/6829/6090/files/rationalisation_questions_for_class_9.pdf
    • https://cdn.shopify.com/s/files/1/0433/8050/6773/files/kevutedarej.pdf
    • https://cdn.shopify.com/s/files/1/0432/6853/8521/files/73315099762.pdf
    • https://cdn.shopify.com/s/files/1/0432/6624/4764/files/access_control_list.pdf
    • https://cdn.shopify.com/s/files/1/0446/7628/4569/files/another_vs_other.pdf
    • https://cdn.shopify.com/s/files/1/0439/8769/7822/files/vuxiget.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/pocket_podiatry.pdf
    • https://cdn.shopify.com/s/files/1/0431/5280/1943/files/video_converter_pro_free_apk.pdf
    • https://cdn.shopify.com/s/files/1/0429/9112/4643/files/bhaiyyaji_superhit_movie_trailer.pdf
    • https://cdn.shopify.com/s/files/1/0436/8665/8213/files/ninifademobumolabuxupanug.pdf
    • https://cdn.shopify.com/s/files/1/0430/7684/5728/files/23458021336.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_off00026271.bin
d536df62faceeb69a880252f719947a05869331d6fb5232acdc40ee827b772ab
pdf-font-stream PDF embedded font (sfnt) at offset 0x26271 4760 bytes
font_01_sfnt_off0002729d.bin
d162ceaa0a3b62b2ffb6d861cc86eebadc26fe863f31685b269e3439a27026e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x2729D 16776 bytes
font_02_sfnt_off0002a6c8.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15
pdf-font-stream PDF embedded font (sfnt) at offset 0x2A6C8 16204 bytes