Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbce55ec93b5f537…

MALICIOUS

PDF

39.9 KB Created: 2020-08-03 09:16:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 38e021f2dfc3e72de50cd2039759c347 SHA-1: bb4680c02588d8a5bbac980116b7022f6c59fc84 SHA-256: bbce55ec93b5f537bc660849f1825879166f8f2bba5f16e05d873d7548d66dcb
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF document contains a link farm designed to lure users with the promise of 'stronghold hd cheats'. The primary malicious link, https://ttraff.cc/pify?keyword=stronghold+hd+cheats, is a known malicious redirector. The document's structure and embedded links suggest a phishing or scam attempt, likely to lead users to a compromised site or download further malware. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=stronghold+hd+cheats
    • http://files.tulsaboilerroom.com/uploads/1/3/2/7/132712120/zopajimataxatu.pdf
    • http://files.knottyboards.com/uploads/1/3/1/4/131482915/niwaninimekegodo.pdf
    • http://files.rebeccagaddie.com/uploads/1/3/0/9/130969494/lupewekivi_vurawodewebox.pdf
    • http://files.oliverflude.com/uploads/1/3/1/1/131164479/1074e66.pdf
    • http://files.my-elliott.com/uploads/1/3/1/3/131380511/turivuxumumu-rubekasez.pdf
    • https://cdn.shopify.com/s/files/1/0429/6930/1151/files/loruzima.pdf
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/riluvapivunipadibovobaku.pdf
    • https://cdn.shopify.com/s/files/1/0432/9157/4430/files/40527296628.pdf
    • https://cdn.shopify.com/s/files/1/0429/5376/9126/files/57861627385.pdf
    • https://cdn.shopify.com/s/files/1/0432/6116/5723/files/69278562583.pdf
    • https://cdn.shopify.com/s/files/1/0433/4790/2629/files/rivebipadukugodapanafij.pdf
    • https://cdn.shopify.com/s/files/1/0431/4877/1488/files/tuses.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/4334643139.pdf
    • https://cdn.shopify.com/s/files/1/0434/2090/9735/files/50350676195.pdf
    • https://cdn.shopify.com/s/files/1/0432/0342/8510/files/91175692334.pdf
    • https://cdn.shopify.com/s/files/1/0440/2118/6718/files/bubenariligibavadewox.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c47.bin
d927b19d76ec29072649739ea4c627ce87b293f9bfae7f54e6aaf601ce8af7a7
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C47 5304 bytes
font_01_sfnt_off00006e48.bin
8b5c6334d43a13e57b5c63bc14b50e9d6ef41a009892e9ccd4bc75926106b6f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E48 10800 bytes