Malicious PDF — malware analysis report

Static analysis result for SHA-256 329dffb4ba4703a7…

MALICIOUS

PDF

44.3 KB Created: 2020-03-30 02:54:23 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: abd6352c2d75a6f229ee3fd7140c27d8 SHA-1: 39925b1350673370b2e6aba97d071537205f4140 SHA-256: 329dffb4ba4703a76200b9ae903882a373847f13d9facb2cc03df9145fed41e9
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a large number of external links, a technique often used for SEO poisoning or to redirect users to malicious websites. The ML classifier strongly indicated maliciousness. The primary attack pattern involves luring the user to click on one of the numerous embedded URLs, such as http://hotelvic-phase2-ja.devsite-1.com/uploads/1/3/0/4/130435787/130435787.html#ciclo+del+agua+5+pasos, which likely leads to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://hotelvic-phase2-ja.devsite-1.com/uploads/1/3/0/4/130435787/130435787.html#ciclo+del+agua+5+pasos PDF link annotation
    • http://clean-sweep-llc.com/uploads/1/3/0/5/130589260/4625451.pdfIn PDF document text
    • http://sandhoffpest.com/uploads/1/3/0/6/130603986/406d9a.pdfIn PDF document text
    • http://misadvogada.com/uploads/1/3/0/3/130379696/1899093.pdfIn PDF document text
    • http://burgangt.com/uploads/1/3/1/1/131163684/8468760.pdfIn PDF document text
    • http://ineedahomeplease.org/uploads/1/3/0/5/130551656/mufivon.pdfIn PDF document text
    • http://mariadmagdala.com/uploads/1/3/0/3/130313410/zelesoxasakodaz.pdfIn PDF document text
    • http://thetruthdesign.com/uploads/1/3/0/5/130550826/6505921.pdfIn PDF document text
    • http://connellpsych.com/uploads/1/3/1/3/131379381/7b3848.pdfIn PDF document text
    • http://nzsuperyachtgroup.org/uploads/1/3/0/9/130969931/kuponurax.pdfIn PDF document text
    • http://veganagogoorganics.com/uploads/1/3/1/4/131407357/6a702.pdfIn PDF document text
    • http://jballiance.org/uploads/1/3/0/2/130287896/fotupanixuwave.pdfIn PDF document text
    • http://lubaneer.com/uploads/1/3/0/6/130639966/kozapukerana.pdfIn PDF document text
    • http://renewedvitalityhhcs.org/uploads/1/3/1/1/131164024/bc3d3c.pdfIn PDF document text
    • http://centralbucksmedspa.com/uploads/1/3/0/6/130604197/mubasenomasasurapaj.pdfIn PDF document text
    • http://impressionshairandesthetics.com/uploads/1/3/0/6/130621210/fototapob_gebuf.pdfIn PDF document text
    • http://pierredesanges.com/uploads/1/3/0/9/130969757/10148.pdfIn PDF document text
    • http://anthonysgeneralcontracting.com/uploads/1/3/1/1/131164020/3641014.pdfIn PDF document text
    • http://thereluctanttransformationalist.com/uploads/1/3/0/5/130543148/zakaziluratumad.pdfIn PDF document text
    • http://mickkok.com/uploads/1/3/0/5/130538950/8242303.pdfIn PDF document text
    • http://triwholehealth.com/uploads/1/3/0/6/130621486/juxuxefegarame.pdfIn PDF document text
    • http://arohacoaching.net/uploads/1/3/0/8/130814754/2111567.pdfIn PDF document text
    • http://trishbenedik.net/uploads/1/3/0/9/130968933/222122.pdfIn PDF document text
    • http://ellensburgduilawyer.com/uploads/1/3/0/7/130739284/1330114.pdfIn PDF document text
    • http://zoeapos.com/uploads/1/3/0/2/130271061/kelajimaromujiw.pdfIn PDF document text
    • http://mncheesemakers.org/uploads/1/3/0/6/130640236/8863278.pdfIn 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

Related samples 7

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_off00008317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8317 8564 bytes
SHA-256: 7a3b372f6b2504da8f77dd82818884298ee17433925a9b185d8389c24d0730db

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