Malicious PDF — malware analysis report

Static analysis result for SHA-256 062dae552881d4b0…

MALICIOUS

PDF

46.3 KB Created: 2020-08-21 11:01:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49735bad216ce1aeaf42bd744097c730 SHA-1: 652255216849766b57359fe2752cbcd591400036 SHA-256: 062dae552881d4b0c92c716f99a961156e8f4daa10602ddfe212648f1e6f2491
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector pointing to 'https://ttraff.com/pify?keyword=video+player+premium+mod+apk'. The document body, though heavily obfuscated, contains text related to 'video player premium mod apk', suggesting a lure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to distribute malicious content.

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=video+player+premium+mod+apk
    • http://tilen.beercityrecovery.com/uploads/1/3/2/7/132740373/535739.pdf
    • http://zipibaxa.justbeyou.earth/uploads/1/3/0/7/130738909/07432538157e86.pdf
    • http://sovuj.fastflyingmarketing.org/uploads/1/3/0/8/130874277/laxebozisipor.pdf
    • http://files.achschoral.com/uploads/1/3/0/8/130814043/b78535dab7f454.pdf
    • http://files.twohappyhedgehogs.com/uploads/1/3/1/3/131398084/5508191.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/4603/3818/files/77869433798.pdf
    • https://cdn.shopify.com/s/files/1/0434/5351/3881/files/checkbox_color_android_studio.pdf
    • https://cdn.shopify.com/s/files/1/0441/2624/0920/files/fodorojolo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7081/6407/files/77730047537.pdf
    • https://cdn.shopify.com/s/files/1/0437/8578/1397/files/beer_mechanics_of_materials_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/9305/6933/files/understanding_earth_6th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/setting_up_a_webserver.pdf
    • https://cdn.shopify.com/s/files/1/0465/5353/0526/files/xujitelereziloko.pdf
    • https://cdn.shopify.com/s/files/1/0436/4392/8726/files/woxemisamamimaki.pdf
    • https://cdn.shopify.com/s/files/1/0431/3654/9018/files/gomezowazugesudagevopaku.pdf
    • https://cdn.shopify.com/s/files/1/0431/2766/8890/files/pdf_accessibility_checker_tool.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006228.bin
a5b3eefee8f136dc54ae77e8d74e55ba96be6639c86ba33fced77393853a1249		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6228 5060 bytes
font_01_sfnt_off00007350.bin
52791de124596cde50c71cb3ca2173219249a34109c0cdb8ba1708d38f6a80e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7350 10484 bytes
font_02_sfnt_off00009762.bin
df8916dc0488248139c8b7f8575cdad52201066875df9eb3f38f8be7ce625b0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9762 16076 bytes

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