Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7822898b5b649a6…

MALICIOUS

PDF

49.9 KB Created: 2020-09-02 03:39:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 96f4e9f278a2bd66a9730f2d4ca41dd1 SHA-1: 855aca9214fddc9d615a7180004630e86eff4d7d SHA-256: d7822898b5b649a66f3e2a4655733393ce8648e86c7aedb42a9d8b8b174dc4f9
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a malicious redirector link disguised as a download for a "zombie shooter gun target hack mod apk". The document body and heuristics indicate a lure to download a file, likely malware, from the provided URL. The presence of a link farm suggests an attempt to distribute malicious content widely.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.me/wix?keyword=zombie+shooter+gun+target+hack+mod+apk In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/5619/3687/files/free_avast_driver_updater_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/define_coliform_bacteria_science_term.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5506/2938/files/46130657664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1952/5531/files/vopifovujezofavu.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ee6770_7fa4613835f148d89c6e5081e3d12404.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_685c5de96c4c4fb7b9e312da8da0a627.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/82e28d_f659a9e2c11c4863acfba4734ff526b2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/253000_2c018e5fc2ef4d40bae8d6e59d647017.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b910ae_4a576bbbec09435f8794a22add45c107.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/88a84f_a74e994e6e864d88846eb31d49dfb3f2.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f84671_f001f95f4aeb4e76a49ba9d56f37a565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6980/8535/files/papubomebazibumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0392/7973/files/fegezap.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62DE 2952 bytes
SHA-256: e211f2d6e0d1bf1fd17bd5150bc2724fb7c0f1d37b1c69b855d9dcad8de34ab0
font_01_sfnt_off00006d6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D6C 5616 bytes
SHA-256: bd54f9b5904867a07f64c987f76ad2c587621acf07e38c9e972da7ea43817204
font_02_sfnt_off00008056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8056 10880 bytes
SHA-256: 990fa2fd233d973cda757733d997b025cc73f9e09c0d51a4bf01f920813c8d12
font_03_sfnt_off0000a575.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA575 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848