Malicious PDF — malware analysis report

Static analysis result for SHA-256 2182297c6161ee0a…

MALICIOUS

PDF

46.2 KB Created: 2020-08-20 20:09:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 242f178fa0cbdf0ef77ef61757f70e3f SHA-1: b2ec04c89a69bdd5259e9cab4f31e2f914ea1e8d SHA-256: 2182297c6161ee0a8a2b967dd539d967a12140df05c2f9f17aaba56af506154d
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to a URL that impersonates the Windows Media Creation Tool. The document body also contains this URL and a list of other URLs, many hosted on Shopify, likely part of a link farm to improve SEO for malicious content. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

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.cc/pify?keyword=windows+media+creation+tool+win+10
    • http://zipojo.bikramstjohns.com/uploads/1/3/1/4/131437532/fabuvofadusatafib.pdf
    • http://netetajo.lifechurcheu.com/uploads/1/3/0/8/130813533/848107.pdf
    • https://cdn.shopify.com/s/files/1/0430/1009/7313/files/chspe_secrets_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/1301/2630/files/our_casuarina_tree_summary_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0429/6428/7651/files/animated_bollywood_video_song.pdf
    • https://cdn.shopify.com/s/files/1/0437/7106/8577/files/buku_amanat_haji_hadi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9934/8389/files/12509485765.pdf
    • https://cdn.shopify.com/s/files/1/0431/1800/2340/files/xubinakex.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/jijufuja.pdf
    • https://cdn.shopify.com/s/files/1/0429/5426/0633/files/2005_volkswagen_beetle_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/4858/2820/files/53770685478.pdf
    • https://cdn.shopify.com/s/files/1/0429/0147/1388/files/mood_examples_in_literature.pdf
    • https://cdn.shopify.com/s/files/1/0433/4066/0895/files/afrisam_bursary_application_form.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066d8.bin
c3b8c3b4649966d8cc120f3ebe34aef67a6560793ac84fb55aa673f8ccb43993
pdf-font-stream PDF embedded font (sfnt) at offset 0x66D8 5172 bytes
font_01_sfnt_off00007861.bin
b1df1a7503ed0f05ab3e98d898f9e5d58a278a3c63f24e4f95eb801461548e5c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7861 11048 bytes
font_02_sfnt_off00009e06.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E06 4324 bytes