Malicious PDF — malware analysis report

Static analysis result for SHA-256 100e5e189e4b045d…

MALICIOUS

PDF

45.5 KB Created: 2020-08-01 09:58:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6eb28188992ac2e95bb5aad295fb6aa3 SHA-1: 288ec8f86adde42183b507d3e760f459bf627479 SHA-256: 100e5e189e4b045d9c78bf0c016b656a62a59494cd7e37d17a1e7d38b4fcc60c
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one prominent URL pointing to a known malicious redirector. The ML classifier strongly flagged this PDF as malicious, and the heuristic rules indicate it's a redirector and part of a link farm. The document body, though heavily obfuscated, contains the same malicious URL and appears to be a lure for an ebook.

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.ru/pify?keyword=calum+von+moger+ebook+pdf
    • http://files.jenniferhayesstl.com/uploads/1/3/1/4/131453588/6816396.pdf
    • http://files.abbyweiss.com/uploads/1/3/1/4/131453946/nifodifojutidewe.pdf
    • http://files.travelingthewrightway.com/uploads/1/3/0/7/130775632/965219.pdf
    • http://files.iamyandea.com/uploads/1/3/2/6/132683130/9819148.pdf
    • http://files.foxtapestrydesign.com/uploads/1/3/0/7/130738792/niwozep_nuwuw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/0185/6668/files/24459092344.pdf
    • https://cdn.shopify.com/s/files/1/0438/4561/5766/files/62497330431.pdf
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/13607648164.pdf
    • https://cdn.shopify.com/s/files/1/0437/5855/1189/files/ruger_1022_disassembly.pdf
    • https://cdn.shopify.com/s/files/1/0431/1888/7068/files/giancoli_physics_4th_edition_solution_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/magej.pdf
    • https://cdn.shopify.com/s/files/1/0429/0114/3715/files/xivixejewunoruwamorife.pdf
    • https://cdn.shopify.com/s/files/1/0431/1384/0793/files/zaletewalexurivepo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7161/8723/files/62340694218.pdf
    • https://cdn.shopify.com/s/files/1/0437/5658/5121/files/noginev.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006225.bin
8187145963fbf8e0b7977f93bb9cbfc296fb812f6e2b6f40a3c8d31ca5a797a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6225 6744 bytes
font_01_sfnt_off0000730c.bin
dd17052b41f6bf404754018dafa52bd333c262667e59a791f2a51c85914c1b1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x730C 5352 bytes
font_02_sfnt_off0000852f.bin
d387f84f445bb9a3a142e4882aa7f1fc8156d252d3861d3d15091748e7453d5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x852F 10328 bytes

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