Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bdddc2c77ce1d6b…

MALICIOUS

PDF

45.7 KB Created: 2020-09-11 18:14:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f828a3a5485fcbffac64de73f3487a6a SHA-1: 5f92aa54f2dafc89ae9ee615af34fba7c684b9f7 SHA-256: 4bdddc2c77ce1d6be745cae0d79f880672e024f2f07c0995e17620b326eb919d
152 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the same malicious URL and references to 'full movie mp4', suggesting a lure for potentially harmful content. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, further supporting the malicious intent of redirecting users.

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.me/pify?keyword=brahmachari+full+movie++mp4
    • http://files.sharpeningonsite.com/uploads/1/3/0/8/130814052/pakuli-deledizurerij-kovupebonages-ruroj.pdf
    • http://mokorowiv.maitlanddrivertraining.com/uploads/1/3/0/8/130814328/7750945.pdf
    • http://kukidu.pokeyoswaco.com/uploads/1/3/0/7/130776007/3916409.pdf
    • http://files.bariatricsinc.com/uploads/1/3/1/4/131436991/4426323.pdf
    • http://sekivom.dulcetdecibels.com/uploads/1/3/0/8/130814328/numeja.pdf
    • https://cdn.shopify.com/s/files/1/0432/9357/3288/files/92019402237.pdf
    • https://cdn.shopify.com/s/files/1/0431/4320/0929/files/vesizopuwigos.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65545430121.pdf
    • https://cdn.shopify.com/s/files/1/0428/4802/6780/files/writing_instructions_worksheet.pdf
    • https://static.usrfiles.com/ugd/17beed_0a378adbdd12402584a5296323f595f4.pdf
    • https://static.usrfiles.com/ugd/65e777_a1d8a6e69e4040cb9df334c11768e345.pdf
    • https://static.usrfiles.com/ugd/79cb75_4e81f01136524642aedd52669bf05f7a.pdf
    • https://static.usrfiles.com/ugd/5b5da7_13195058f90a42bfa8c772a8a6ec82da.pdf
    • https://static.usrfiles.com/ugd/205ae4_0a0423c4711f439ea330868d612b180b.pdf
    • https://cdn.shopify.com/s/files/1/0433/0042/1790/files/49519634461.pdf
    • https://cdn.shopify.com/s/files/1/0440/9766/7224/files/septic_arthritis_treatment_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0462/7221/7237/files/dajajanipozota.pdf
    • https://cdn.shopify.com/s/files/1/0457/5297/5516/files/labaraw.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_off00006766.bin
f0952d088fa05d078346b8f942d9a9e06c423918aa2ade6cffc01829b36ced90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6766 4968 bytes
font_01_sfnt_off00007854.bin
593df7f9940a6a70541137707a977675c27486683f47148421174b52877cedfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7854 10312 bytes
font_02_sfnt_off00009b9f.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B9F 4324 bytes

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