Malicious PDF — malware analysis report

Static analysis result for SHA-256 617504973178d378…

MALICIOUS

PDF

45.8 KB Created: 2020-09-17 10:58:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a785930f3328b87d48f550aef1269c9 SHA-1: 80a35add30e736c972f8e5e4dd04b04f43a9836b SHA-256: 617504973178d378903767c2732442373141cce530e3f8b87d2d656d9f4dedba
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm for SEO manipulation or to obscure malicious content. One critical heuristic identified a link to known malicious redirector infrastructure, specifically `https://ttraff.link/wix?keyword=football+manager+handheld+2015+apk+cracked`, which is likely used to redirect users to a malicious site. The document body, though heavily obfuscated, contains references to cracked software, reinforcing the lure.

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.link/wix?keyword=football+manager+handheld+2015+apk+cracked
    • http://files.jenniferyackel.com/uploads/1/3/1/3/131383791/2483817.pdf
    • http://files.intrendsic.net/uploads/1/3/0/7/130775063/pirozoga-rixujoburoru-kutopewu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/4964/7264/files/pejiputafugadodekuzazufad.pdf
    • https://cdn.shopify.com/s/files/1/0438/4414/1218/files/operation_alamelamma_movie_hd.pdf
    • https://cdn.shopify.com/s/files/1/0436/1990/9794/files/zasinefizijutatesad.pdf
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/lovely_images_for_whatsapp_dp.pdf
    • https://baa26711-e0df-40f2-a0be-53ba9d05fb96.filesusr.com/ugd/70e7d4_ee0af766af1549059c1b6360a8893752.pdf?index=true
    • https://05079a99-6f2e-4fac-b0a2-9e369ccd310c.filesusr.com/ugd/b0b521_b9b76e5b365f426bb792a95378e6c694.pdf?index=true
    • https://2af5fd6b-6b30-4d5c-9418-1eb11e355ec6.filesusr.com/ugd/45fd81_8c0798ae50b04ee0a7292dead9011494.pdf?index=true
    • https://5c0c7d50-3b64-4443-8030-8ea3dff517e4.filesusr.com/ugd/e42c35_9d8b231669694239944e90e50e378b28.pdf?index=true
    • https://9efad93c-d095-4c51-b67f-1b76d881e05f.filesusr.com/ugd/b0cd75_449b2306ae6d4bc0b23406c6e0436cee.pdf?index=true
    • https://6e163fa8-ba6c-4304-8fef-dc969fb59510.filesusr.com/ugd/94e5ef_5823246051e54ea6b908d000e756f348.pdf?index=true
    • https://35663acb-9e6f-451a-ac89-a99db9715fd6.filesusr.com/ugd/64bd79_db38cf96ab434b73a9a426db291e4375.pdf?index=true
    • https://5dd11264-e94b-46c0-ad94-8984b9cf59d4.filesusr.com/ugd/18f527_c1b8404c182049da95fa36559e552994.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066f2.bin
0a2e2ea43291460994b228f0d4b934a7e7451ce88d828de77c6be2235d7b82c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66F2 5916 bytes
font_01_sfnt_off00007af5.bin
53d771ed46c464fa25835127fbef2f902910f089c9a1005020b63e7115b72652		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF5 15248 bytes

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