Malicious PDF — malware analysis report

Static analysis result for SHA-256 63d704d433233369…

MALICIOUS

PDF

62.9 KB Created: 2020-10-31 04:43:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ccef522c3c342ea99401cc4788da1158 SHA-1: 2f04f6d063349293f8872ab653d51ea55408438a SHA-256: 63d704d433233369a0b897766cb37a084c8de0c68772d4a00b8d6530e334d4b9
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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/123?keyword=chemistry+2+for+dummies+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4391331/normal_5f929f1e84290.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365628/normal_5f899f2b52023.pdfIn 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/1/0495/7808/2495/files/mowejoxofetowiwenogutoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1296/3482/files/10911945085.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/5758/5569/files/nidetiwipivap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4030/4025/files/zunurakiwironilenes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/8171/5878/files/13960999076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6112/5013/files/39090589716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/2000/4761/files/happy_new_year_2020_punjabi_status_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6346/7414/files/canon_vixia_hf_r800_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3237/0074/files/spectrum_cable_tv_guide_louisville_ky.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/learn_arabic_letters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3253/3922/files/libro_los_ordenes_del_amor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8956/7152/files/86488035919.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3BA 5180 bytes
SHA-256: ff0c4ae4089dde0c261d552ead79980cb5aad72795403fb6ac142eeb5beb76b9
font_01_sfnt_off0000c537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC537 12672 bytes
SHA-256: d79093834dd1984f84bf5b17f5107bf49806d0bf846a44468ac5b20267a062f2

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