Malicious PDF — malware analysis report

Static analysis result for SHA-256 2721e7c63d7f3401…

MALICIOUS

PDF

41.6 KB Created: 2020-11-05 18:04:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96b267c4edac5dd182cfa5cc3aa7867d SHA-1: 778dcd2ce8888094f086470f8acd9252d5494011 SHA-256: 2721e7c63d7f340144d6e5aac689469c6338099401f8d6c4ebd8e023ead17e28
96 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which point to other PDFs hosted on Weebly and Strikingly. The primary link, 'https://trafftec.ru/strik?keyword=mi+vida+loca+episode+6+answer+key', appears to be a lure for a link farm. While no scripts were explicitly extracted, the PDF structure and the presence of numerous external links suggest an attempt to redirect users to malicious content or a phishing site, potentially leveraging embedded JavaScript for obfuscation or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafftec.ru/strik?keyword=mi+vida+loca+episode+6+answer+key
    • https://xulajaxosu.weebly.com/uploads/1/3/4/3/134366267/lositevavox.pdf
    • https://gemamiji.weebly.com/uploads/1/3/4/3/134372226/viwumibajamewuz-xumuwaranilivuw-jepigoda-tajiwik.pdf
    • https://mesipaku.weebly.com/uploads/1/3/1/3/131383407/nisobepo-dumilevuvini-legime.pdf
    • https://posepopofag.weebly.com/uploads/1/3/4/6/134609660/f8793c15b.pdf
    • https://rajomiluti.weebly.com/uploads/1/3/2/6/132682989/ea2a6cfa6893.pdf
    • https://vujerige.weebly.com/uploads/1/3/4/4/134467486/giloxinetubewuvanizi.pdf
    • https://zemuxarasojutin.weebly.com/uploads/1/3/4/3/134374283/1e730811f5.pdf
    • https://bewapuvin.weebly.com/uploads/1/3/1/4/131453684/nivejojarosilo.pdf
    • https://nimewoguvinu.weebly.com/uploads/1/3/4/4/134433183/3546035.pdf
    • https://dududisekit.weebly.com/uploads/1/3/4/3/134348084/3909da.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/fa6c8295-eedb-4ac5-9a07-44d3e01967ab/81274707461.pdf
    • https://uploads.strikinglycdn.com/files/cce99242-bf30-4055-8c87-e00307ae98f9/muwoxaxeresejasurate.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000534f.bin
04d0d08c2419cb817a0b02838caa8a527fb5ced9b188748f15f7222a0e22d60d
pdf-font-stream PDF embedded font (sfnt) at offset 0x534F 5252 bytes
font_01_sfnt_off00006548.bin
75bdcba27b12f265cee07801369eab8b4795ed011a9ac5f632d913173837b291
pdf-font-stream PDF embedded font (sfnt) at offset 0x6548 11520 bytes
font_02_sfnt_off00008b94.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B94 4324 bytes