Malicious PDF — malware analysis report

Static analysis result for SHA-256 80bc83f96e584560…

MALICIOUS

PDF

110.5 KB Created: 2020-09-19 00:14:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c6afc9367c5693937d5a72ad42a87d9f SHA-1: 305422bf6239fb6210e5b11288182c835a1fb7f1 SHA-256: 80bc83f96e5845604af8a757b122eb876e544945dbd4217b85da5d52429c76d0
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.club'. The document body, though heavily obfuscated, contains the same URL. This indicates the primary purpose is to redirect the user to a malicious site, likely for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious.

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.club/wix?keyword=mystic+messenger+707+phone+call+answers
    • https://6fbdc6cc-17fa-45c8-92c9-cedca674cbb2.filesusr.com/ugd/5ad03d_fca13cdf2b614d37a63eacec0481b3e2.pdf?index=true
    • https://1be87a24-6010-4b2e-83eb-a3265f653a96.filesusr.com/ugd/98e2de_8c76fd5491e04070983f6499eb0497be.pdf?index=true
    • https://f8d0bf06-847f-4730-b25a-f3d3ae7b2dec.filesusr.com/ugd/3225da_d3336fd56c3047a38bb4173ecd8a0a58.pdf?index=true
    • https://ce7836ab-c253-406b-8ea5-cce34b51526e.filesusr.com/ugd/08338c_6009b46e039342dda09e1fdd81fe0d20.pdf?index=true
    • https://2bd5204c-8534-4c22-8e55-47fdab572eb2.filesusr.com/ugd/cece23_bcbac19ea7964807a2865c0f654590c7.pdf?index=true
    • https://aac42198-6ba0-4793-b90d-1f29139345a0.filesusr.com/ugd/724bd4_46d3a01c48e34f8c8daed2f342077423.pdf?index=true
    • https://3e3c34dc-2249-4024-ac3c-e6a98d37e598.filesusr.com/ugd/1b0481_a0de30f32b164ced8bbf2c1a80c4580b.pdf?index=true
    • https://2fcf7857-34e8-444b-873c-4bfefcb673c9.filesusr.com/ugd/67e251_753735ea76d448a2b312401ba1a223eb.pdf?index=true
    • https://3ce725df-3222-4051-bfad-3ce5fb39d89b.filesusr.com/ugd/c20ea7_88bfe3aa4f5b489ca588cca12a0dcdee.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0428/2541/6860/files/mango_capsa_susun_indoplay_mod_apk.pdf
    • https://cdn.shopify.com/s/files/1/0435/3589/2639/files/living_room_in_spanish_wordreference.pdf
    • https://e57aca04-fd47-416c-aeac-d28578e2cf1f.filesusr.com/ugd/0b46e6_0a4ce6bd02a046b9b7dfdcbe52011550.pdf?index=true
    • https://2e4937d1-67a2-4651-b7f3-5dc903a2d0ff.filesusr.com/ugd/7d1dc9_af1f306898244eb98525fe2a7049ff2d.pdf?index=true
    • 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_off00016a73.bin
4849c913fab9f1487dac0220c969ed28fa9dec0be3f7b91c06ff76a777508e95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16A73 5768 bytes
font_01_sfnt_off00017e12.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17E12 1800 bytes
font_02_sfnt_off0001869f.bin
cd76c551a66c9da1b4b72f7e78d9dd278e16b55530d8b7186be01d40c5a82c81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1869F 10980 bytes

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