Malicious PDF — malware analysis report

Static analysis result for SHA-256 01d69c2c012eaf7a…

MALICIOUS

PDF

33.4 KB Created: 2020-08-19 05:54:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 596b31f9863223d50680c8a35423f0a1 SHA-1: 6ca622697e10ce7b927253c0ea01f959ad729aa0 SHA-256: 01d69c2c012eaf7a6fcf2f1feff67cc10ced9418f21f08347b7e9be22e868d59
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a mass external link farm, with many links pointing to Shopify domains, likely to appear legitimate. The primary malicious link, https://ttraff.cc/pify?keyword=ehsaas+nahi+tujhko+video, is a known malicious redirector. The ML classifier strongly indicated maliciousness, supporting the presence of a malicious redirector.

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/pify?keyword=ehsaas+nahi+tujhko+video
    • http://files.pgpeeweebooster.org/uploads/1/3/1/6/131637763/kewotevuwuzewizuxejo.pdf
    • http://files.aasca.org/uploads/1/3/2/6/132680986/b46292a632.pdf
    • http://files.lebaneseaustralianfriendship.com/uploads/1/3/1/3/131398424/92a29b.pdf
    • http://files.carseatlibrariesuk.com/uploads/1/3/2/6/132695257/fisarumulufu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0440/1093/0341/files/imanage_worksite_server_administrator_s_guide.pdf
    • https://cdn.shopify.com/s/files/1/0448/1413/9558/files/anamika_academy_material_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/3141/3404/files/36925903239.pdf
    • https://cdn.shopify.com/s/files/1/0432/6719/5040/files/4539218553.pdf
    • https://cdn.shopify.com/s/files/1/0431/5512/8477/files/vedodopuruneniluwawozawi.pdf
    • https://cdn.shopify.com/s/files/1/0428/3305/1814/files/wireless_android_auto_stereo.pdf
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/gst_percentage_list.pdf
    • https://cdn.shopify.com/s/files/1/0433/1867/3566/files/pamuz.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/nolenazo.pdf
    • https://cdn.shopify.com/s/files/1/0439/2720/8091/files/fodarake.pdf
    • https://cdn.shopify.com/s/files/1/0434/1222/6202/files/common_idioms_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/0993/1426/files/20179181553.pdf
    • https://cdn.shopify.com/s/files/1/0434/5780/6486/files/grade_11_mathematics_textbook_ethiopia.pdf
    • https://cdn.shopify.com/s/files/1/0431/9828/3940/files/melawumuzeju.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_off000047cf.bin
aff2b8c8894f2ed5f80f573bdc3303360a5c70e7a679e4997128637e3e62dcff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47CF 4940 bytes
font_01_sfnt_off000058a0.bin
71f687b77f91475a1e9ac4359880f8114b532af568db3f3c0b22aab63e7bedf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58A0 9360 bytes

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