Malicious PDF — malware analysis report

Static analysis result for SHA-256 953d7efedb481b74…

MALICIOUS

PDF

50.2 KB Created: 2020-05-18 11:58:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e264e5f1c056ee0d0014b51bc80038bc SHA-1: d58a7ef2120cdd8ba78d4a2c83f0759d0776c592 SHA-256: 953d7efedb481b74f11bc083c3a5186dfb2502bfef885614d625da34150384e7
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The ML classifier also strongly indicated maliciousness. The embedded document body text, though garbled, contains a URL that is also present in the list of external links. This suggests the document's primary purpose is to redirect users to a network of potentially malicious or spam-related websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://suncoastfll.com/uploads/1/3/0/5/130543575/130543575.html#amantadina+dosis+pediatrica+pdf
    • http://diamonddobermansoklahoma.com/uploads/1/3/0/4/130483318/lenenigipeke_xipot_vamubomiga_gitigigeba.pdf
    • http://alenahenke.com/uploads/1/3/0/6/130604179/wabinabej.pdf
    • http://billingsequestrian.com/uploads/1/3/0/6/130604414/9180abbd.pdf
    • http://rosaleescreations.com/uploads/1/3/0/6/130621155/suwokozimowikutapipu.pdf
    • http://1221citycenteroakland.com/uploads/1/3/0/7/130775288/faxezaw.pdf
    • http://charlesbenmergui.com/uploads/1/3/0/4/130488779/minejuwitoge_kixad.pdf
    • http://whitzellroofing.com/uploads/1/3/0/7/130739177/3881888.pdf
    • http://dohagardenclub.net/uploads/1/3/1/6/131607363/vomiwef.pdf
    • http://fjlclothesaccessories.com/uploads/1/3/0/4/130475901/27cc87dd.pdf
    • http://aroundthebay.us/uploads/1/3/0/5/130539223/palav-lekubetipe-disepebakotup.pdf
    • http://mpeach.co/uploads/1/3/0/3/130323175/vifigipufuwuwa.pdf
    • http://theblackduckstudios.com/uploads/1/3/0/6/130620942/fovuretadi_gotaxa_nanevitokikela_lipagezon.pdf
    • http://vilagetulio.com/uploads/1/3/1/4/131437937/3347650.pdf
    • http://crossroadpropertyinvestors.net/uploads/1/3/1/4/131454151/8176927.pdf
    • http://cavalierkingcharles4u.com/uploads/1/3/0/7/130776517/lusis.pdf
    • http://wildatlanticpubs.com/uploads/1/3/0/6/130621791/4223518.pdf
    • http://littlecorner.shop/uploads/1/3/0/5/130589007/bunewutakenafataw.pdf
    • http://lipglossmarketing.com/uploads/1/3/0/2/130289509/8569427.pdf
    • http://codespring.org/uploads/1/3/0/2/130270863/9345382.pdf
    • http://annies-market.com/uploads/1/3/1/3/131384679/gajaw-tubiwonewulurev.pdf
    • http://binnachbooks.com/uploads/1/3/0/8/130813987/kupazowonurejuv-xonufiw-boxuja-pavusumisujetaw.pdf
    • http://almya.eu/uploads/1/3/0/4/130476657/vituvinibutopozu.pdf
    • http://avabaycompany.com/uploads/1/3/1/3/131380433/1652470.pdf
    • http://yourfunctionalspaces.com/uploads/1/3/0/6/130639308/7220819.pdf
    • http://foreverlawngeorgia.com/uploads/1/3/0/7/130775002/1806619.pdf
    • http://foreverlawngeorgia.com/uploads/1/3
    • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000096bc.bin
c6885ccdda506cc461b24fcb6feaf64599b102623a9ecb826bd3dc1173750feb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96BC 11788 bytes

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