Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ad07443071653f6…

MALICIOUS

PDF

44.2 KB Created: 2020-09-02 21:11:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 17ff008dd11d85a3b195e2798f4b649c SHA-1: b0605e07d1ab1042bb4dd331b689966417fa63ee SHA-256: 4ad07443071653f6be9d976ede57a7d1317e4fba892efde754ce9ede1a02768d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell T1204.002 Malicious Link: Malicious File

The PDF contains a lure related to 'Digestive system crossword answers' and embeds multiple links. One critical heuristic indicates a PDF redirector link to 'ttraff.club', which is known malicious infrastructure. The document body also contains this URL and numerous other links, many pointing to Shopify domains, suggesting a link farm or redirection scheme. The ML classifier 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/pify?keyword=digestive+system+crossword+answers
    • https://cdn.shopify.com/s/files/1/0432/3098/6400/files/dragonwings_study_guide_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/sosajusikizezosi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31968244380.pdf
    • https://cdn.shopify.com/s/files/1/0431/3884/2779/files/template_of_wedding_invitation_card_free.pdf
    • https://static.usrfiles.com/ugd/b8c837_c80be75911d54b73a1e4a307ccab9268.pdf
    • https://static.usrfiles.com/ugd/de60da_0203cbf0169040b195680a388981e299.pdf
    • https://static.usrfiles.com/ugd/3fb742_b646b7a9c8544ffd929e454419fd73be.pdf
    • https://static.usrfiles.com/ugd/a91264_7235a1e45f6547138c9b2d31c0e7b0c4.pdf
    • https://static.usrfiles.com/ugd/b42fd6_5b763741c2f245c197eff1fde7bb9e39.pdf
    • https://static.usrfiles.com/ugd/83f04e_18bf6618e25f40e2bc957634d42dc4e2.pdf
    • https://static.usrfiles.com/ugd/7b00a0_07c246a5772e47db89f44d5f5621b841.pdf
    • https://static.usrfiles.com/ugd/269bb8_a7952313b3434ed4b956c888ec5097d6.pdf
    • https://static.usrfiles.com/ugd/bf07b1_006ef47343424848ae2d18156cda93ed.pdf
    • https://static.usrfiles.com/ugd/0d2908_395081b235a044729d4046a017c86644.pdf
    • https://cdn.shopify.com/s/files/1/0433/8306/2678/files/42393457876.pdf
    • https://cdn.shopify.com/s/files/1/0444/3560/3623/files/apgli_benefits_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0457/7689/6156/files/forasewedixuk.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b98.bin
85a9ec08b3d9f2b3cc3ea62f8d1ab1b1278f7b082a3463cc3f6c5172d551137b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B98 5480 bytes
font_01_sfnt_off00007e46.bin
d39ae2ae8aed33d7abdc0e452806a68a8319682235549945043d440b0e90006b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E46 11588 bytes

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