Malicious PDF — malware analysis report

Static analysis result for SHA-256 11051fe1be556309…

MALICIOUS

PDF

46.9 KB Created: 2020-08-06 07:00:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9cd9563384426622b9cfd5465788b7b SHA-1: 757c9246232b947d00194d429a7d066814dbe942 SHA-256: 11051fe1be556309541427f95ffbe8183fa1a05f7ec4657e7b5e9cfeff4f5053
154 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body and embedded artifacts suggest a link farm strategy, with numerous URLs pointing to external resources, likely to manipulate search engine results or lure users to malicious sites. The primary malicious URL identified is https://ttraff.com/pify?keyword=amgen+biotech+experience+pdf.

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.com/pify?keyword=amgen+biotech+experience+pdf
    • http://files.jerrygarciafoundation.net/uploads/1/3/1/3/131398334/9322465.pdf
    • http://files.outoftimedesigns.com/uploads/1/3/0/9/130969151/dogatunu-zuxega-wepojiteworimod.pdf
    • http://vawixu.benbryantfilmandphotography.co.uk/uploads/1/3/0/8/130874422/7177134.pdf
    • http://pamuzog.glennmade.net/uploads/1/3/1/4/131438641/8830775.pdf
    • http://files.masiuliai.com/uploads/1/3/0/8/130813692/xosodifixi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/4964/7261/files/xaxomugadirajodakubux.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/korirebazuwedowatema.pdf
    • https://cdn.shopify.com/s/files/1/0431/7957/3414/files/59074996262.pdf
    • https://cdn.shopify.com/s/files/1/0437/1103/7591/files/dragon_quest_xi_soothing_seaweed.pdf
    • https://cdn.shopify.com/s/files/1/0432/8924/7894/files/bm_tron_unblocked.pdf
    • https://cdn.shopify.com/s/files/1/0434/7609/1046/files/elementary_books.pdf
    • https://cdn.shopify.com/s/files/1/0432/4671/5040/files/63527707568.pdf
    • https://cdn.shopify.com/s/files/1/0433/3489/3718/files/save_gif_photoshop.pdf
    • https://cdn.shopify.com/s/files/1/0435/1043/1896/files/gowukak.pdf
    • https://cdn.shopify.com/s/files/1/0431/0233/9232/files/lejusolugiwebuxesijawu.pdf
    • https://cdn.shopify.com/s/files/1/0438/8493/7384/files/ejercicios_cardio_en_casa.pdf
    • https://cdn.shopify.com/s/files/1/0431/5732/3933/files/jodexizosidokozupevizame.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006979.bin
08c949ab7bfcb2448122e9586bae6c001024c9ea60e4c3e4fb79e48e4e5d5bda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6979 4040 bytes
font_01_sfnt_off000077cb.bin
0d8a82edfd6335cefcb0d1bde5424aec816b267cf7b13cd8b64d6bec62cf8bf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77CB 5348 bytes
font_02_sfnt_off000089dc.bin
801c5594a7a90d262d6a501fefbae0eb1a2828050c88fabbec56a6ce360df19a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89DC 10624 bytes

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