Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee524bab265f6f6…

MALICIOUS

PDF

34.4 KB Created: 2020-03-29 12:46:49 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5bd786ab2e1599daa9a1f43b41f24b48 SHA-1: e39244d33d21f24f090ce5ae626518bddc71d0d4 SHA-256: 7ee524bab265f6f6a9ceb266061ec131e2bbb6a71435c67b2083699660a4c3ad
96 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body text, though partially obfuscated, also contains URLs. This suggests the primary purpose is to redirect users to a network of websites, likely for SEO spam or to host further malicious content. No scripts were extracted, but the presence of numerous external links points to a malicious intent.

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 http://arcadiagardensllclandscapinganddesign.com/uploads/1/3/0/5/130552097/130552097.html#we+wanna+see+jesus+chords
    • http://jerusalem-parkour.com/uploads/1/3/0/6/130621706/bivaxuwozuj.pdf
    • http://alyssabrownbeautyco.com/uploads/1/3/0/4/130490250/2080453.pdf
    • http://newbornumc.org/uploads/1/3/0/3/130380037/larasufijifator.pdf
    • http://shop-perfectly-impressive-store.com/uploads/1/3/0/9/130969166/moliwuf_nikimonu.pdf
    • http://sunnysidegiftbags.com/uploads/1/3/0/4/130483860/ximejuwuzipapajeto.pdf
    • http://welldigalsarlu.com/uploads/1/3/0/6/130621004/4397734.pdf
    • http://nicolleespinal.com/uploads/1/3/0/2/130287221/bunubimoruxumonoxuz.pdf
    • http://autotransportesamy.com/uploads/1/3/0/5/130550703/6236286.pdf
    • http://uniqueplumbing.net/uploads/1/3/0/5/130589037/0169c90.pdf
    • http://lushiousboutique2.com/uploads/1/3/0/4/130494059/774fd2.pdf
    • http://sodesolution.org/uploads/1/3/0/6/130603943/seduteze.pdf
    • http://vetphysio4motion.com/uploads/1/3/0/5/130588500/rugowokeritava-najifibe.pdf
    • http://myannuityguru.com/uploads/1/3/0/4/130483477/e820eec.pdf
    • http://blueknightswi2.com/uploads/1/3/0/7/130775130/naperevij_wodutofanirig.pdf
    • http://jspagemediagroup.com/uploads/1/3/0/7/130740456/29678.pdf
    • http://istemeducation.net/uploads/1/3/0/6/130639558/galuxegefoma.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d27.bin
07efc4f96b56215fbd20e316986ee5169bda01298e3336589199bd3483715d9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D27 8024 bytes

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