Malicious PDF — malware analysis report

Static analysis result for SHA-256 60816d6d336ae2c5…

MALICIOUS

PDF

45.1 KB Created: 2020-09-06 18:59:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b26fed93a58aec9ad49bd454bfac75d SHA-1: 2f4d3a6aec0e5b4f79f56e626f6560a1fd39aa73 SHA-256: 60816d6d336ae2c5c19bd4de23b8f1d9659a507ec77ae1c9b7d4e666e74bd916
154 Risk Score

Malware Insights

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

This PDF file contains a link farm and a direct link to a redirector URL, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains text related to a "Zenonia 5 stats guide" and the malicious URL, suggesting a lure to a malicious site. The ML classifier also strongly flagged this PDF as malicious.

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/wix?keyword=zenonia+5+stats+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/d99ef3_3f0ed0c977734075bd8178e23ede3def.pdf
    • https://static.usrfiles.com/ugd/af0aa9_71bb2f515bfe402aac90a7c9c5997d00.pdf
    • https://static.usrfiles.com/ugd/02631b_52c9151976af44b09e33cc2bee14e785.pdf
    • https://static.usrfiles.com/ugd/cb2bed_ab9ccea5da5b4912a3f37aabe19658ee.pdf
    • https://cdn.shopify.com/s/files/1/0429/0668/1497/files/43466299687.pdf
    • https://cdn.shopify.com/s/files/1/0450/1677/6868/files/51339170835.pdf
    • https://cdn.shopify.com/s/files/1/0449/7919/1966/files/89440906994.pdf
    • https://cdn.shopify.com/s/files/1/0429/2545/7574/files/mosomexibezesewezafo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1092/4437/files/max_heap_python.pdf
    • https://cdn.shopify.com/s/files/1/0431/1721/5905/files/perugumurip.pdf
    • https://cdn.shopify.com/s/files/1/0427/7967/2735/files/sexor.pdf
    • https://cdn.shopify.com/s/files/1/0446/6691/2921/files/abbreviations_used_in_medical_reports.pdf
    • https://cdn.shopify.com/s/files/1/0434/2956/0476/files/2024046759.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e67156b404d4e84b9a943e3778bc25e.pdf
    • https://static.usrfiles.com/ugd/3e0cb9_e7d1719dc1244426bc19740dae50bee0.pdf
    • https://static.usrfiles.com/ugd/868401_9b181132f1524c7ab6eb9d388d93511c.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000735c.bin
e6a1a64f62fd2199232111f25ef3ddf71e92331643463c5516524b57490f0d69
pdf-font-stream PDF embedded font (sfnt) at offset 0x735C 4944 bytes
font_01_sfnt_off00008446.bin
058c66cef91b3577b537ecc2b22f43c1b36775c2308d888e4395c562fd52fb90
pdf-font-stream PDF embedded font (sfnt) at offset 0x8446 10412 bytes