Malicious PDF — malware analysis report

Static analysis result for SHA-256 79f98ef8ad3f873c…

MALICIOUS

PDF

31.5 KB Created: 2020-05-16 13:55:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-08-25
MD5: 631f291b207803a95bd5cec0b87a4e6c SHA-1: 52fd70c1b5660bc4f1afab64f49413f1c5191d69 SHA-256: 79f98ef8ad3f873cbf3eb563e7465c56c792db523307b7b16c8433d7941b37b0
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The primary URL, http://ssjohn832.com/uploads/1/3/0/5/130588572/130588572.html#raghuvaran+b.+tech+movie+songs++doregama, appears to be a lure for movie-related content, which is a common tactic for distributing malicious files. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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 http://ssjohn832.com/uploads/1/3/0/5/130588572/130588572.html#raghuvaran+b.+tech+movie+songs++doregama PDF link annotation
    • http://preferredproviders.net/uploads/1/3/1/3/131398185/2093861.pdfIn PDF document text
    • http://mattched.com/uploads/1/3/0/8/130814063/vezufojajapurebewat.pdfIn PDF document text
    • http://joejorde.com/uploads/1/3/0/7/130739923/vabuzuvukijajo.pdfIn PDF document text
    • http://write-with-creativity.com/uploads/1/3/0/6/130604300/furanafibe.pdfIn PDF document text
    • http://phoenixperformancestudio.com/uploads/1/3/0/8/130874122/mixegi-gekumevix.pdfIn PDF document text
    • http://kitsonschuyler.com/uploads/1/3/0/4/130476332/misopetetuno.pdfIn PDF document text
    • http://andrephilippephoto.net/uploads/1/3/1/4/131453177/4e1de84d8c.pdfIn PDF document text
    • http://taylororchards.net/uploads/1/3/0/9/130969656/wozafone.pdfIn PDF document text
    • http://usedtractor2000jd.com/uploads/1/3/0/4/130477245/719b3e1109.pdfIn PDF document text
    • http://productosmagneticos.com/uploads/1/3/0/7/130776206/kepovelumeva.pdfIn PDF document text
    • http://weekendbackyard.com/uploads/1/3/1/4/131437131/3ec8ea93b5b.pdfIn PDF document text
    • http://lightningsportsmedicine.net/uploads/1/3/0/6/130640042/cc0a5b.pdfIn PDF document text
    • http://ryanraeandjayde.com/uploads/1/3/0/7/130776739/tagunoxewizinimosusi.pdfIn PDF document text
    • http://reedhendersontrust.org/uploads/1/3/0/6/130639542/37889.pdfIn PDF document text
    • http://gatprojects.com/uploads/1/3/1/0/131070656/zogene.pdfIn PDF document text
    • http://mococivil.com/uploads/1/3/1/8/131856244/bugurajakobajusesi.pdfIn PDF document text
    • http://nhvfd18.org/uploads/1/3/1/8/131856034/7856910.pdfIn PDF document text
    • http://cynthiarussomano.com/uploads/1/3/0/8/130813715/2636050.pdfIn PDF document text
    • http://yakitorimo.com/uploads/1/3/0/7/130739188/savogibobumaj.pdfIn PDF document text
    • http://notanuffibizans.com/uploads/1/3/0/3/130379126/peziladed.pdfIn PDF document text
    • http://falksierra.com/uploads/1/3/0/6/130620910/b4d2a69.pdfIn PDF document text
    • http://arcboycomputers.com/uploads/1/3/1/6/131606727/5311442.pdfIn PDF document text
    • http://blushboudoirbyjanav.com/uploads/1/3/0/5/130550969/wizitafigidon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50DD 9720 bytes
SHA-256: eff17fa2e364f9f5f757c4aa3e6a4e3b45a896a1919b46c98b98fe3ef946a2e6

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