Malicious PDF — malware analysis report

Static analysis result for SHA-256 041b96a6a05086ad…

MALICIOUS

PDF

36.1 KB Created: 2020-08-29 23:23:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e1d46ebf676763c10acab2a114cfc1f SHA-1: 5f3b6595d5140e6a0689ec91ae712cbbca74aa12 SHA-256: 041b96a6a05086adc08c99f6ec4888b613e8d487bbe2fc3755bc47a28f3f02f8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'streaming asterix et obelix mission' and the malicious URL. This suggests a phishing or scam attempt designed to redirect users to 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.cc/wix?keyword=streaming+asterix+et+obelix+mission
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/6353/2951/files/3msc_libro_completo.pdf
    • https://cdn.shopify.com/s/files/1/0438/7281/3211/files/tosujilufuzurubofakizi.pdf
    • https://cdn.shopify.com/s/files/1/0433/7221/6483/files/manixawoziwexenisagozuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/0017/6544/files/archinteriors_vol_47.pdf
    • https://cdn.shopify.com/s/files/1/0432/2784/0675/files/kowozedol.pdf
    • https://cdn.shopify.com/s/files/1/0432/2387/5746/files/68142657821.pdf
    • https://cdn.shopify.com/s/files/1/0439/8202/8958/files/pasugebolopomod.pdf
    • https://cdn.shopify.com/s/files/1/0433/3273/1030/files/39876835943.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/lapinonutarukitobukonir.pdf
    • https://cdn.shopify.com/s/files/1/0430/9044/4445/files/9516760689.pdf
    • https://cdn.shopify.com/s/files/1/0463/6943/9899/files/pathinalam_ravu_badusha_video_songs.pdf
    • https://cdn.shopify.com/s/files/1/0431/8806/0321/files/update_package_missing_system._img.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_off00004eaf.bin
1ba7085f76685742dc16be9aa5b2c98421349f544b0f20882f0cd1f0888644cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x4EAF 5316 bytes
font_01_sfnt_off000060aa.bin
e02fc52caa25774ad9790164da245ce9823a05fe04e407a7d0c931b11bea7823
pdf-font-stream PDF embedded font (sfnt) at offset 0x60AA 10276 bytes