PDF malware analysis — malicious · a7128d9e2f053d99

MALICIOUS

PDF

45.2 KB Created: 2020-10-30 11:00:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 402bfd4882a995ef1a92e3b57346f063 SHA-1: 93244ec68e8caa266c5d16f7ce88713cb63eef64 SHA-256: a7128d9e2f053d99a652784ca8f7c4c75c815d5a231623d5d15d3977946754d7

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing indicating a malicious redirector link. The embedded URL, https://ttraff.link/123?keyword=full+attack+grapple+pathfinder, is the primary indicator of malicious intent. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same URL, suggesting its purpose is to lure the user to this 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.link/123?keyword=full+attack+grapple+pathfinder
- https://cdn-cms.f-static.net/uploads/4374198/normal_5f8eee1f51be0.pdf
- https://cdn-cms.f-static.net/uploads/4373304/normal_5f89185a9791d.pdf
- https://tabuxeniki.weebly.com/uploads/1/3/2/6/132682737/gemimigisalasebu.pdf
- https://cdn-cms.f-static.net/uploads/4366331/normal_5f892fcc0a4a6.pdf
- https://cdn-cms.f-static.net/uploads/4375351/normal_5f8996d265cc9.pdf
- https://folarudivol.weebly.com/uploads/1/3/1/8/131871739/gujekituwirazodejup.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/dda3b642-3a70-436b-8f35-efa21a907849/sibesuvadobawa.pdf
- https://uploads.strikinglycdn.com/files/29448aba-5a3a-40be-814d-b7e3e36ab375/pidizopozakevepazam.pdf
- https://uploads.strikinglycdn.com/files/8c12de5e-8f8b-41c9-a190-f5080238bf4c/cisco_ios_commands_list.pdf
- https://uploads.strikinglycdn.com/files/69b08682-54ed-4cc9-8e07-35704e4ac605/17168478032.pdf
- https://cdn.shopify.com/s/files/1/0507/3059/8584/files/black_and_decker_pocket_power_manual.pdf
- https://uploads.strikinglycdn.com/files/036ef9cf-69c3-402f-8973-6e7b005a605e/61989558574.pdf
- https://s3.amazonaws.com/digigitusuduk/burn_after_writing_book_five_below.pdf
- https://s3.amazonaws.com/fajonubinomeder/pdf_splitter_joiner_portable.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00007175.bin` `632d5ab02d7bb4bc98402337828e3e6c883d85be3b794a90325e5979b72d5191`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7175	5260 bytes
`font_01_sfnt_off00008358.bin` `aa42dbb1a839b12b11b7309f475c566e333313abb77b5a9666ac9e6f2dd7b8f9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8358	10780 bytes

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