Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fb149de798bd196…

MALICIOUS

PDF

38.4 KB Created: 2020-09-08 01:19:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d115bbc68448e351be777ad96a7bad8d SHA-1: 87c106e3473eee25fdc474972386e9b2a8a6f72a SHA-256: 0fb149de798bd196b4073887e59db6ee69e77606570d876aa86ba4c9b3de8e58
162 Risk Score

Malware Insights

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

This PDF file contains a critical heuristic indicating it redirects to known malicious infrastructure via the URL https://ttraff.club/wix?keyword=cookery+classes+ielts+answer. Additionally, it features a large number of embedded links, many pointing to benign Shopify PDFs, but the primary redirector is highly suspicious. The presence of a 'download button' lure further supports a phishing or redirection attack. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.club/wix?keyword=cookery+classes+ielts+answer
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/9801/3863/files/megulofuwogete.pdf
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/bimovetisajut.pdf
    • https://cdn.shopify.com/s/files/1/0438/4705/7568/files/s_chand_ca_foundation_books.pdf
    • https://cdn.shopify.com/s/files/1/0432/6935/7728/files/pilukafavewufudutup.pdf
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/86874282848.pdf
    • https://cdn.shopify.com/s/files/1/0434/3981/6861/files/65900215705.pdf
    • https://cdn.shopify.com/s/files/1/0432/4058/7423/files/biorthogonal_wavelet_transform.pdf
    • https://cdn.shopify.com/s/files/1/0428/5952/8355/files/96225693572.pdf
    • https://cdn.shopify.com/s/files/1/0432/0627/9323/files/star_wars_battlefront_2_prima_official_game_guide.pdf
    • https://static.usrfiles.com/ugd/943725_cfb70b10bf1d4d7ba065b24347c995c4.pdf
    • https://static.usrfiles.com/ugd/4725f1_bc020d0cef4b482e83ce96f35cf25286.pdf
    • https://static.usrfiles.com/ugd/23924c_3e4b9a97f3b4437c972d073d1ffd4c09.pdf
    • https://static.usrfiles.com/ugd/610d21_cab12731ca5849169406135df6dcf2dc.pdf
    • https://static.usrfiles.com/ugd/b8c837_86fce33d88d24af9b0187d99524497b9.pdf
    • https://static.usrfiles.com/ugd/f46427_4bbc91eee5d445099157749f3a1b5ffa.pdf
    • https://static.usrfiles.com/ugd/a107db_1b25034814e24191a1f6deb2091b5b05.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bea.bin
17ef797247537a4caa28bf2a6dbd8509500e363ad24f7b91e3b521386828173c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BEA 4864 bytes
font_01_sfnt_off00005c92.bin
18fb79256484a65f7f3d802d00d878ec3073dd21b85dc2a93e8325fa95c3d5cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C92 10060 bytes
font_02_sfnt_off00007ecf.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ECF 4324 bytes

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